Biographical

Portrait of Jason Jennings

Jason Jennings PRockies

Rockies Player Cards | Rockies Team Audit | Rockies Depth Chart

Career Summary
Years IP W L SV SO ERA WARP
9 1128.3 62 74 1 749 4.95 11.5
Birth Date7-17-1978
Height6' 2"
Weight235 lbs
BatsL
ThrowsR
WARP Summary

Standard

YEAR TEAM AGE G GS IP IP-SP IP-RP W L SV BS QS BQS PA H R ER HR TB BB UBB HBP SO ERA FIP FRA VORP WARP
2001 COL 22 7 7 39.3 39.3 0.0 4 1 0 0 4 0 174 42 21 20 2 64 19 19 1 26 4.58 3.87 4.56 8.6 0.9
2002 COL 23 32 32 185.3 185.3 0.0 16 8 0 0 13 1 808 201 102 93 26 316 70 68 8 127 4.52 4.59 5.18 27.6 2.7
2003 COL 24 32 32 181.3 181.3 0.0 12 13 0 0 15 0 820 212 115 103 20 331 88 81 5 119 5.11 4.63 5.17 24.8 2.2
2004 COL 25 33 33 201.0 201.0 0.0 11 12 0 0 17 2 925 241 125 123 27 385 101 87 7 133 5.51 4.99 5.75 23.4 2.1
2005 COL 26 20 20 122.0 122.0 0.0 6 9 0 0 8 3 551 130 73 68 11 197 62 58 5 75 5.02 4.58 5.31 10.5 1.0
2006 COL 27 32 32 212.0 212.0 0.0 9 13 0 0 20 0 902 206 94 89 17 309 85 78 3 142 3.78 4.06 4.85 23.8 2.3
2007 HOU 28 19 18 99.0 98.0 1.0 2 9 0 0 6 0 445 119 73 71 19 206 34 32 2 71 6.45 5.33 5.75 3.2 0.1
2008 TEX 29 6 6 27.3 27.3 0.0 0 5 0 0 1 0 135 35 27 26 8 67 18 16 1 12 8.56 8.17 8.14 -3.2 -0.3
2009 TEX 30 44 0 61.0 0.0 61.0 2 4 1 1 0 0 272 67 31 28 7 106 28 25 2 44 4.13 4.67 5.07 6.5 0.6
Career2251801128.31066.362.0627411846503212536616211371981505464347494.954.705.33125.311.5

Advanced

'opp' stats - Quality of opponents faced - have been moved and are available only as OPP_QUAL in the Statistics reports now.
Minor league stats are currently shownClick to hide.
YEAR Team Lg G GS IP FRA FRA+ TAv oppAVG oppOBP oppSLG oppTAv BABIP PPF PVORP PWARP VORP WARP
1999 ASH A 12 12 58.3 0.00 0 .000 .000 .000 .000 .000 .000 0.0 0.0 0.0 0.0
1999 POR A- 2 2 9.0 0.00 0 .000 .000 .000 .000 .000 .000 0.0 0.0 0.0 0.0
2000 SLM A+ 22 22 150.3 0.00 0 .000 .000 .000 .000 .000 .000 0.0 0.0 0.0 0.0
2000 CAR AA 6 6 36.7 0.00 0 .000 .000 .000 .000 .000 .000 0.0 0.0 0.0 0.0
2001 COL MLB 7 7 39.3 4.56 107 .259 .257 .329 .425 .262 .317 103 5.2 0.5 8.6 0.9
2001 CAR AA 4 4 25.0 0.00 0 .000 .000 .000 .000 .000 .000 0.0 0.0 0.0 0.0
2001 CSP AAA 22 22 131.7 0.00 0 .000 .000 .000 .000 .000 .000 0.0 0.0 0.0 0.0
2002 COL MLB 32 32 185.3 5.18 99 .254 .264 .331 .418 .264 .303 114 19.0 1.9 27.6 2.7
2003 COL MLB 32 32 181.3 5.17 96 .279 .257 .321 .403 .254 .327 108 17.0 1.7 24.8 2.2
2004 COL MLB 33 33 201.0 5.75 94 .266 .263 .327 .418 .260 .326 116 15.7 1.5 23.4 2.1
2005 COL MLB 20 20 122.0 5.31 98 .258 .259 .324 .409 .256 .299 114 10.8 1.1 10.5 1.0
2006 COL MLB 32 32 212.0 4.85 103 .241 .265 .331 .424 .265 .289 102 22.8 2.2 23.8 2.3
2007 HOU MLB 19 18 99.0 5.75 84 .291 .267 .328 .426 .258 .313 103 3.7 0.4 3.2 0.1
2007 CCH AA 1 1 5.0 4.16 115 .150 .270 .338 .417 .256 .214 106 0.8 0.1 0.8 0.1
2007 ROU AAA 1 1 3.3 7.60 37 .303 .311 .363 .476 .275 .273 96 -0.5 -0.0 -0.0 -0.0
2008 TEX MLB 6 6 27.3 8.14 49 .313 .271 .335 .429 .264 .281 114 -3.2 -0.3 -3.2 -0.3
2009 TEX MLB 44 0 61.0 5.07 103 .272 .262 .331 .417 .259 .314 108 6.1 0.6 6.5 0.6
2010 SAC AAA 3 3 13.0 5.06 102 .277 .278 .349 .443 .269 .333 104 2.4 0.2 2.4 0.2
2010 ATH Rk 3 3 9.0 4.89 86 .166 .277 .331 .381 .280 .136 91 0.7 0.1 0.7 0.1

Statistics For All Levels

Minor league stats are currently shownClick to hide.
Year Team Lg W L SV G GS IP H BB SO HR GB% BABIP H/9 BB/9 HR/9 K/9 WHIP ERA VORP WARP
1999 POR A- 1 0 0 2 2 9.0 5 2 11 0 0% .000 5.0 2.0 0.0 11.0 0.78 1.00 0.0 0.0
1999 ASH A 2 2 0 12 12 58.3 55 8 69 3 0% .000 8.5 1.2 0.5 10.7 1.08 3.70 0.0 0.0
2000 CAR AA 1 3 0 6 6 36.7 32 11 33 4 0% .000 7.8 2.7 1.0 8.1 1.17 3.43 0.0 0.0
2000 SLM A+ 7 10 0 22 22 150.3 136 42 133 6 0% .000 8.1 2.5 0.4 8.0 1.18 3.47 0.0 0.0
2001 COL MLB 4 1 0 7 7 39.3 42 19 26 2 62% .317 9.6 4.3 0.5 5.9 1.55 4.58 8.6 0.9
2001 CAR AA 2 0 0 4 4 25.0 25 8 24 1 0% .000 9.0 2.9 0.4 8.6 1.32 2.88 0.0 0.0
2001 CSP AAA 7 8 0 22 22 131.7 145 41 110 9 0% .000 9.9 2.8 0.6 7.5 1.41 4.72 0.0 0.0
2002 COL MLB 16 8 0 32 32 185.3 201 70 127 26 59% .303 9.8 3.4 1.3 6.2 1.46 4.52 27.6 2.7
2003 COL MLB 12 13 0 32 32 181.3 212 88 119 20 49% .327 10.5 4.4 1.0 5.9 1.65 5.11 24.8 2.2
2004 COL MLB 11 12 0 33 33 201.0 241 101 133 27 48% .326 10.8 4.5 1.2 6.0 1.70 5.51 23.4 2.1
2005 COL MLB 6 9 0 20 20 122.0 130 62 75 11 50% .299 9.6 4.6 0.8 5.5 1.57 5.02 10.5 1.0
2006 COL MLB 9 13 0 32 32 212.0 206 85 142 17 45% .289 8.7 3.6 0.7 6.0 1.37 3.78 23.8 2.3
2007 CCH AA 0 0 0 1 1 5.0 3 1 2 0 50% .214 5.4 1.8 0.0 3.6 0.80 0.00 0.8 0.1
2007 HOU MLB 2 9 0 19 18 99.0 119 34 71 19 38% .313 10.8 3.1 1.7 6.5 1.55 6.45 3.2 0.1
2007 ROU AAA 0 0 0 1 1 3.3 3 5 2 0 36% .273 8.2 13.6 0.0 5.5 2.42 10.91 -0.0 -0.0
2008 TEX MLB 0 5 0 6 6 27.3 35 18 12 8 45% .281 11.5 5.9 2.6 4.0 1.94 8.56 -3.2 -0.3
2009 TEX MLB 2 4 1 44 0 61.0 67 28 44 7 45% .314 9.9 4.1 1.0 6.5 1.56 4.13 6.5 0.6
2010 SAC AAA 0 0 0 3 3 13.0 16 4 9 1 42% .333 11.1 2.8 0.7 6.2 1.54 6.23 2.4 0.2
2010 ATH Rk 0 0 0 3 3 9.0 3 3 10 0 50% .136 3.0 3.0 0.0 10.0 0.67 1.00 0.7 0.1

Plate Discipline

YEAR PITCHES ZONE_RT SWING_RT CONTACT_RT Z_SWING_RT O_SWING_RT Z_CONTACT_RT O_CONTACT_RT SW_STRK_RT
2008 483 0.5031 0.3644 0.8864 0.5350 0.1917 0.9231 0.7826 0.1136
2009 1052 0.4800 0.4320 0.7974 0.6059 0.2706 0.9118 0.5608 0.2026
Career15350.48730.41070.82540.58360.24580.91540.63060.1746

Injury History

Date On Date Off Transaction Days Games Side Body Part Injury Severity Surgery Date Reaggravation
2008-04-30 2008-09-28 60-DL 151 134 Right Elbow Surgery Flexor Tendon and Ulnar Nerve Irritation 2008-05-30
2007-08-21 2007-10-01 15-DL 41 37 Right Elbow Surgery Flexor Tendon 2007-08-31
2007-04-09 2007-05-29 15-DL 50 44 Right Elbow Inflammation Tendonitis -
2005-07-21 2005-10-03 60-DL 74 69 Right Fingers Surgery Middle Finger Fracture 2005-07-26
2003-09-15 2003-09-29 DTD 14 12 General Medical Illness Virus -

Compensation

Year Team Salary
2009 TEX $800,000
2008 TEX $4,000,000
2007 HOU $5,500,000
2006 COL $2,300,000
2005 COL $2,300,000
2004 COL $340,000
2003 COL $325,000
2002 COL $206,000
YearsDescriptionSalary
8 yrPrevious$15,771,000
8 yrTotal$15,771,000

 

Service TimeAgentContract Status
7 y 39 dCasey Close

Details
  • 1 year (2010). Signed by Oakland as a free agent 2/28/10 (minor-league contract).
  • 1 year/$0.8M (2009). Signed by Texas as a free agent 2/6/09 (minor-league contract). Salary of $0.8M on 40-man roster ($15,000 guaranteed). Performance bonuses: $0.1M each for 110, 120, 130 IP. $0.2M each for 140, 150 IP. $0.15M each for 160, 170, 180, 190, 200 IP. Contract purchased by Texas 4/5/09. DFA by Texas 8/27/09.
  • 1 year/$4M (2008). Signed by Texas as a free agent 1/17/08. Performance bonuses: $0.375M each for 120, 130, 140, 150 IP. $0.5M each for 160, 170, 180, 190, 200 IP. Award bonuses: $25,000 each for Gold Glove, LCS MVP. $50,000 for All Star. $0.1M for Cy Young ($75,000 for 2nd, $50,000 for 3rd). $0.1M for Rolaids ($75,000 for 2nd, $50,000 for 3rd). $0.1M for Comeback POY. $0.15M assignment bonus if traded (each time). Jennings to donate $25,000 to club charity.
  • 2 years/$7M (2005-06), plus 2007 option. Re-signed 1/05. $0.2M signing bonus. 05:$2.3M, 06:$4.4M, 07:$5.5M mutual option ($0.1M buyout). 2007 option may increase to $6.1M based on IP 2005-06. Colorado exercised $5.5M 2007 option 11/06. Performance bonuses: $50,000 each for 190 and 200 IP.
  • 1 year/$0.34M (2004)
  • 1 year/$0.325M (2003)
  • 1 year/$0.206M (2002), signed 3/02
  • drafted 1999 (1-16), $1.675M signing bonus

2014 Preseason Forecast

Last Update: 3/11/2014 05:35 ET

PCT W L SV G GS IP H BB SO HR BABIP WHIP ERA FRA VORP WARP
Weighted Mean?????0.0????.0000.000.00?0.00.0

Diagnostics

Breakout Rate Improve Rate Collapse Rate Attrition Rate MLB %
0% 0% 0% 0% 0%

Upside By Year

2014 2015 2016 2017 2018 2019 PEAK 5
out of baseballout of baseballout of baseballout of baseballout of baseballout of baseballout of baseball

Comparable Players (Similarity Index )

Rank Score Name Year Run Average Trend

BP Annual Player Comments

YearComment
2011 Jason Jennings tried another comeback in 2010, and was able to stay healthy enough to pitch all of 22 minor-league innings.
2010 It was sort of a successful comeback, but only sort of, as Jennings managed to do good work early on as a middle reliever, albeit one generally pitching when the club was up or down by three runs or more, and snapping off enough sinkers to keep the ball in the yard and himself on the roster. That came to an end in the second half, as he started having a hard time keeping fewer than half of opposing batters from getting on base, leading to his late-August release. His heyday as a Rockies workhorse is now more than three years gone, and he was never the most efficient of strike-throwers out there. He'll have to settle for following the Kip Wells Trail of Travail, bouncing from one extra-dude gig to the next on only the very worst ballclubs.
2009 Jennings has now broken down in consecutive seasons with the same injury to the same flexor tendon—apparently the joint now comes in a nice tearaway version, like a high school football jersey. You might figure that Jennings is about as popular as Santa Anna after burning both Texas ballclubs in consecutive seasons, but there's talk that he'll be back in a Rangers uni as a non-roster invitee, because it couldn't tear a third time, could it? Can the next one involve some sort of solution with velcro?
2008 Just erase 2007 and start over. Jennings was a durable groundball machine for the Rockies, but he missed 15 starts and got the ball in the air more than ever before for the Astros. Diagnosed with tendonitis in his right elbow after just two starts and treated with six weeks of rehab, Jennings came back and pitched progressively worse, then was shut down in August with a torn flexor tendon in the same spot. He underwent surgery and hit the market as a broken free agent, and remained unsigned as we went to press. He's not a bad gamble for an NL team with a good middle infield.
2007 Last year, Jennings had the highest single-season VORP of any starting pitcher in Rockies` history, good for eleventh-best in the majors, and posted the lowest ERA for any starter in club history. His ERA at Coors was 3.56, impressive even in the humidor era, but, because the Rockies averaged a scant 4.03 runs of support (the third-lowest in baseball) in his starts, they threw a good deal of that performance away. Jennings` hard sinker keeps the ball in the park, and he has improved his change and slider. The Astros did not get great value on a single year of his services, but, make no mistake, Jennings is a talented NL starter. A move from Coors Field to Minute Maid Park will not only lower the blood alcohol content of his home stadium, it will also allow Jennings` counting stats to flourish in a more earthbound environment.
2006 In a case of extremely fortunate timing--for him--Jennings missed his first significant time in four years with a broken middle finger just after signing a two-year, $6.9 million contract to avoid arbitration. He`s been remarkably consistent, and when you consider that he`s pitching in the game`s highest run-scoring environment, he`s an undervalued talent. Jennings will be ready for the spring and, more importantly, he`s exactly the kind of pitcher the Rockies should consider signing to a longer term deal since they`ll be able to point to his raw stats and get him potentially under market value.
2005 Jennings hasn't been as bad as his raw numbers, and it's hard to appreciate his value given his surroundings. He's been pretty much a league neutralish pitcher, throwing a bunch of innings for a team that needs more than that. On another club, he might be perceived as a solid workhorse. What you see with Jennings is what you get; a mild bounceback is a reasonable expectation.
2003 Notice that Jennings is still younger than most of their prospects? He’s good, but he doesn’t have an ace’s strikeout rate. The park shaves some strikeouts over the course of a season, but Jennings’s translated rates have been steadily under six. Consistent equivalencies say he’s not likely to flake out this year. What is worrisome is that Jennings’s home run rate spiked in 2002. His combined 2001 numbers are similar to last year, so the Rookie of the Year shouldn’t have been that shocking.
2002 The Rockies 1999 #1 pick out of Baylor reached the big leagues before he forgot how to hit, batting .267/.313/.533 in his brief stint. As we've said many times, pitchers who can hit really help when a team has to carry 12 arms. Jennings's numbers above are skewed a bit: he made just two of his seven starts at Coors, getting hammered both times. He's big, he throws hard, he gets ground balls, and he's that rarest of things: a Rockies pitcher worth getting a little bit excited about.
2001 Jason Jennings was the club’s top pick from 1999 out of Baylor, where he was the NCAA Player of the Year. His sinking fastball isn’t high-octane so much as high-movement; that and his knack for using his change-up make him extremely tough to hit. Jennings was a two-way star in college, DHing when he wasn’t pitching. That experience should have particular value on the Rockies, where any easy out is a bad thing, and where having a pitcher who could pinch-hit would make it a lot easier to carry 12 pitchers. Jennings is likely to come up in September and could stick in 2002.
2000 Jennings was the 16th overall pick in 1999 after being named Baseball America’s College Player of the Year. He was the best pitcher--and most fearsome hitter--on a very good Baylor squad. At Asheville in the Sally League, Jennings put up some great peripherals including an impressive strikeout-to-walk ratio. His mechanics on the mound are very smooth and consistent. He’ll make Carolina next season and pitch in Coors by 2001.

BP Articles

Jason Jennings is referenced in the following articles.

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BP Chats

DateQuestionAnswer
2010-03-17 14:00:00 (link to chat)How does the A's bullpen shake out? Also, if Chavez is healthy enough to start the season on the roster, is there any place for Fox?
(David from Alameda)
I think the big issue with the A's pen is that right now, it's almost as if everyone has one owie or another: Wuertz, Devine, Bailey, Breslow... it's the sort of nagging laundry list that Cedrick Bowers' or Jason Jennings' dreams are made of. So other than taking it for granted that most of those four will be available on Opening Day, and that Brad Ziegler's a lock, it's a bit up in the air. Henry Rodriguez's velocity turns heads. As for Fox, I wouldn't be too down on him. He's out of options, but I'd anticipate that part of keeping Chavez healthy would involve days off for him, and between the four corners and DH, there should be at-bats to go around. The guy who's playing for the present is Daric Barton, who's rising to the challenge, but he has to, because the future belongs to Chris Carter. (Christina Kahrl)
2008-02-29 13:00:00 (link to chat)Everyone seems to say that the Rangers "need more pitching", but is that truly the problem? I guess I've become used to the high offense environment of Rangers Ballpark so I think the problem is that their outfield hasn't produced in a while. Question: year too early? will they content before the A's?
(Ira from Texas)
Generally speaking when teams in hitter's parks do well, they do so based on their pitching. And so getting their rotation ironed out (a rebound from Jason Jennings would of course be among the biggest shots in the arm they could hope for).

That said, I kind of agree with you in that they certainly need more producion from their outfield. I just don't see Byrd, Catalanotto, Bradley, and Hamilton really getting it done. Their team EqA in 2007 was just .257 and that's got to improve if they're going to be competitive before the A's. (Dan Fox)
2008-01-17 14:00:00 (link to chat)Thoughts on the Rangers signing Jason Jennings to a one-year, $4 million deal?
(Joey Matschulat from Tyler, TX)
Might be a win-win for both, as Jennings takes his shot at delivering a year that really puts him in the winner's circle in the subsequent winter. Although I always hate to see a pitcher who can hit a little see that ability get wasted in the AL. (Christina Kahrl)


BP Roundtables

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PITCHf/x Pitcher Profile

A Collaboration between BrooksBaseball.net and Baseball Prospectus - Pitch classifications provided by Pitch Info LLC


Although he has not thrown an MLB pitch in 2014, Jason Jennings threw 2,064 pitches that were tracked by the PITCHf/x system between 2007 and 2009, all of them occuring in the MLB Regular Season. In 2009, he relied primarily on his Fourseam Fastball (90mph) and Slider (83mph), also mixing in a Sinker (91mph) and Change (84mph).