Both the Rangers and the Orioles had a chance to capture a division title up until the final day of the regular season, but they couldn’t have arrived at that point any differently. The Rangers have been accumulating superstars and spending money for years now, and the club is coming off two straight World Series appearances. Baltimore, meanwhile, is in the bottom half of the league in terms of payroll and hasn’t made the postseason—or even finished above .500—since 1997. The O’s weren’t even a .500 team this year in terms of 3rd Order Winning Percentage, but in just a single-game series, it’s entirely possible their Cinderella run will continue.

Lineups (AVG/OBP/SLG/TAv)

LF-L Nate McLouth (.268/.342/.435/.278)
SS-R J.J. Hardy (.238/.282/.389/.234)
RF-L Chris Davis (.270/.326/.501/.289)
CF-R Adam Jones (.287/.334/.505/.297)
C-S Matt Wieters (.249/.329/.435/.270)
DH-L Jim Thome (.257/.348/.396/.262)
1B-R Mark Reynolds (.221/.335/.429/.270)
2B-L Ryan Flaherty (.216/.258/.359/.224)
3B-R Manny Machado (.262/.294/.445/.261)

2B-R Ian Kinsler (.256/.326/.423/.255)
SS-R Elvis Andrus (.286/.349/.378/.255)
CF-L Josh Hamilton (.285/.354/.577/.307)
DH-R Adrian Beltre (.321/.359/.561/.316)
RF-R Nelson Cruz (.260/.319/.460/.274)
3B-R Michael Young (.277/.312/.370/.239)
LF-L David Murphy (.304/.380/.479/.302)
1B-R Mike Napoli (.227/.343/.469/.284)
C-R Geovany Soto (.196/.253/.338/.227)

The Orioles possess the worst offense among AL playoff teams in terms of both TAv and actual run-scoring. Exacerbating this deficiency is the September loss of leadoff hitter Nick Markakis. The team did add Thome, Machado, and (gulp) McLouth late in the season, though, and Reynolds finally began to hit, so they won’t be quite as hapless as the numbers indicate. Davis and Jones established themselves as legitimate middle-of-the-order threats this season, and the O’s do figure to keep the lineup lefty-righty balanced, never hitting two hitters of the same hand back-to-back. In totality, though, Baltimore simply lacks the punch and star power of the Rangers.

Texas scored more runs than any other team in baseball this season and ranks second among AL playoff contenders in terms of TAv. Its offense is a juggernaut. The Rangers’ one through six and number-eight hitters all have All-Star appearances on their resumes. They lose a bit of offense by starting Soto (Darvish’s personal catcher) over Moreland (who rarely plays against lefties anyway), and they could lose a bit more if Gentry starts in place of Murphy, but they still best the quality of the O’s by a wide margin.

Benches (AVG/OBP/SLG/TAv)

2B-R Robert Andino (.211/.283/.305/.218)
C-R Taylor Teagarden (.158/.226/.316/.220 in 64 plate appearances)
OF-L Endy Chavez (.203/.236/.278/.198)
OF-R Lew Ford (.183/.256/.352/.209 in 79 plate appearances)
MI- Omar Quintanilla (.232/.284/.354/.236)

OF-R Craig Gentry (.304/.367/.392/.272)
1B-L Mitch Moreland (.275/.321/.468/.264)
C-R Luis Martinez (.111/.158/.111/.108 in 19 plate appearances)
SS-S Jurickson Profar (.176/.176/.471/.206 in 17 plate appearances)
OF-L Leonys Martin (.174/.235/.370/.186 in 52 plate appearances)

The Rangers easily have the two best bench options in the series, and a deep one to boot. Gentry is a terrific defensive outfielder who can get on base and run. Moreland offers both contact and power hitting and could be particularly useful versus a righty-heavy Baltimore bullpen. He can also play a solid first base if the team pinch-hits for Geovany Soto late and shifts Napoli to catcher. Alternately, they’ll have Luis Martinez to catch and provide additional flexibility in this regard. We’re unlikely to see Profar or Martin unless they’re used to pinch-run.

The Orioles’ bench is nowhere near as good as that of the Rangers, and it will be limited in depth by their decision to go pitcher-heavy with their extra roster spots for the series. It seems unlikely we’ll see many of these guys for more than a brief moment, either as late-inning defensive replacements (Chavez, Quintanilla) or pinch-runners (Chavez, Ford). They don’t have a single pinch-hitting option to be excited about, though it’s possible Showalter could play the match-ups and attempt to give Andino or Ford an at-bat versus a lefty reliever.

Starting Pitchers (IP, ERA, FIP)

LHP Joe Saunders (44.2, 3.63, 3.72)

RHP Yu Darvish (191.1, 3.90, 3.24)

It’s been quite the up-and-down season for Saunders, going from the odd man out in Arizona to being trusted by the Orioles to start with their season on the line in a one-game playoff. While he’s actually been quite good with the O’s, we’re looking at some good luck in a small sample size, driven by an 8.8 percent HR/FB. Indeed, mediocre is a far more common adjective used to describe Saunders. The southpaw has plus control, but his stuff is below average. His fastball sat just over 88 mph in Baltimore, and he lacks a true out pitch.

One could think of Darvish as almost the exact opposite of Saunders. Laden with hype all season long, Darvish possesses average-at-best control but compensates with terrific stuff and multiple out pitches. By our count, he throws at least eight different pitches (none worse than average), keeping hitters off balance and generating tons of strikeouts. He’s gone through some rough patches adjusting to the majors this year, but he’s been very good of late and gives the Rangers a huge edge over the O’s and Saunders.

Bullpen (IP, ERA, FIP)

RHP Jim Johnson (68.2, 2.49, 3.21)
RHP Pedro Strop (66.1, 2.44, 3.54)
LHP Brian Matusz (98, 4.87, 4.64)
RHP Darren O'Day (67, 2.28, 2.91)
RHP Luis Ayala (75, 2.64, 3.62)
LHP Troy Patton (55.2, 2.43, 3.21)
RHP Steve Johnson (38.1, 2.11, 3.41)
RHP Tommy Hunter (133.2, 5.45, 5.70)
LHP Zach Britton (60.1, 5.07, 4.27)
RHP Jake Arrieta (114.2, 6.20, 4.01)

RHP Joe Nathan (64.1, 2.80, 2.74)
RHP Koji Uehara (36, 1.75, 2.35)
RHP Alexi Ogando (66, 3.27, 3.68)
LHP Robbie Ross (65, 2.22, 3.35)
RHP Roy Oswalt (59, 5.80, 4.18)
RHP Scott Feldman (123.2, 5.09, 3.77)
LHP Michael Kirkman (35.1, 3.82, 4.26)
RHP Yoshinori Tateyama (17, 9.00, 5.05)
LHP Matt Harrison (213.1, 3.29, 3.98)
LHP Derek Holland (175.1, 4.67, 4.71)

The Orioles posted the second-best bullpen ERA among AL playoff teams this season (and fifth-best in baseball), although it’s been more of a team effort than the result of having any truly elite options. Johnson had a breakout campaign as the team’s closer, but as good as he’s been, he doesn’t fit the shut-down closer profile, relying more on control and grounders than he does on whiffs. With the ability to keep starters Wei-Yin Chen, Miguel Gonzalez, and Chris Tillman off the one-game wild-card roster, the Orioles have said they will lean toward stocking their roster with extra pitchers. As a result of this strategy and the sharing-is-caring nature of Baltimore’s pen, their relievers may have a short leash if Saunders—who ought to have a short leash himself—doesn’t pitch deep into the game. Keep an eye on O’Day, whose submarine delivery makes him particularly effective against righties, which the Rangers’ lineup is stacked with.

The Rangers will be without set-up man Mike Adams, but they still possess several elite options that the O’s can’t match, starting with closer Nathan, who was second among all AL relievers this season in xFIP. Uehara has been excellent since returning from the DL and will have no problem taking on more high-leverage responsibility in front of Nathan. He’ll be helped in this regard by former starter (and former closer candidate) Ogando and his 97-mph fastball. With a couple of Baltimore lefties due up, Ross could be utilized as well. Unless Darvish gets chased from the game early, however, it’s unlikely we’ll see anyone besides these four on the mound for Texas.

Baltimore ranks ninth in baseball (and second among AL playoff teams) in both raw and park-adjusted defensive efficiency, but a look around the diamond calls just how good they are into question. Markakis is gone, replaced by Davis, who’s more of a corner infielder. Jones is solid enough in center, but he’s flanked by McLouth, who is not. Machado is an improvement over Reynolds at third and pairs strongly with Hardy on the left side of the infield, but Flaherty and Reynolds are far from ideal on the right side.

Texas ranks 17th in defensive efficiency and 20th when it’s park-adjusted, highlighting what is likely their biggest weakness. And they’ll be worse off than this, even, if they go with the lineup I projected earlier: Napoli over Moreland at first, Young playing third for an injured Beltre, and a Murphy/Hamilton LF/CF pairing instead of Hamilton/Gentry.

Texas skipper Ron Washington is well-regarded for his ability to keep order in the clubhouse, which is important for getting through the grind of a 162-game season. When it comes time for the playoffs, however, this ability takes the backseat to being a competent field general. Washington is not the best tactician and, in fact, tactical gaffes may have cost the Rangers last year’s World Series.

Buck Showalter may be well-known for wearing out his welcome in the clubhouse, but he hasn’t yet in Baltimore and is a superior tactician to Washington. As I alluded to earlier and Ben Lindbergh noted yesterday, Showalter’s ability to manage his pitching staff could prove crucial to Baltimore’s chance of winning this game.

It’s one game and anything can happen, but the smart money is on the Rangers. They’re simply the better team, holding advantages over Baltimore nearly everywhere. A superior offense against an inferior starting pitcher could be all that matters in this one. If the team jumps out to an early lead and Darvish goes six innings, the Rangers will cruise to victory.

After running the lineups and pitchers for tonight's game, given the Rest-of-Season PECOTA projections for those players, PECOTA expects the Rangers to have a big advantage in tonight's game with a projected .702 win percentage. The Orioles may have a slight advantage on the defensive side or in a game that comes down to managerial tactics, but the superior offense and starting pitcher make Texas big favorites.

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I'm just wondering what defensive metrics you are using when evaluating the Orioles. Honestly, McLouth and Reynolds have both looked outstanding over the season's final month.
Zach's comment regarding McLouth and Reynolds, which, as an O's fan, I agree with, leads me to comment on the differences between observation and fielding metrics.

Some examples from the Orioles: right field: Derek states that replacing Markakis with Davis in right field is a detriment defensively. I agree from observing them, but FRAA doesn't seem to. Markakis' FRAA is -6.6 (?). Davis' FRAA is +2.6 (admittedly Davis has played several positions). Endy Chavez, who is routinely used as a late inning defensive replacement for Davis has a FRAA of -0.9.

Observing McLouth in LF leads me to believe he is quite good defensively, but FRAA rates him -1.6.

I agree with Zach that Reynolds has been very good this season at 1B, but FRAA says -15.1 (this would include his early games at 3B, but they were only, I'd estimate, 15-20 games) The -15.1 2012 FRAA is worse than 2011 at -14.5. I don't see how any objective observer can say that Reynolds has been worse defensively this year, primarily at 1B, than he was last year, primarily at 3B.

At 2B, Flaherty has a -0.7 FRAA, while Andino, who is used as a platoon partner and defensive replacement for Flaherty, has an FRAA of -2.6 (Andino has played a lot more. This could be explained by the additional playing time).

From years of reading and observation, I have a lot of confidence in offensive metrics. I lack similar confidence in individual defensive metrics, other than DER, which is common sense, and team based. I even have confidence in PADE. I look at individual defensive metrics, but I find I don't have much confidence in them.

One month of observation is almost always going to be misleading regarding defense, as will even a whole season of FRAA or any other stat. We know, in general, that Markakis is good and McClouth is not, from years of scouting and combined metrics. Same with Davis. Players don't just get good at fielding suddenly at the end of a season.
Regarding your comment that Markakis is good defensively and McLouth is not - Every year of FRAA for McLouth is negative (which agrees with your point), but also every year of FRAA for Markakis (except for 2006, his first year) is negative (which disagrees with your point)

All of which shows why I lack confidence in FRAA.
Ogremace pretty much nailed it. I'm not just looking at a couple months worth of a metric or even just a year. My impressions are a blend of years of metrics and scouting observations. Defense is an inexact science given the tools we have now, but TGisriel is right that looking at a single year fielding metric for a player is often going to be misleading.
Where do we post our predictions?

I'm going with Cinci and Detroit.
Article has been updated with PECOTA's projection and official rosters.