Washington Nationals
-Rank second in the NL, fourth in the majors in run differential (+76) - Cardinals (+96), Yankees (+86) and Rangers (+80)
-21 days (13-8 record) into a stretch that will see the team play 35 games in 34 days
-SP John Lannan has gone 0-4 with a 5.50 ERA in his last six starts versus the Marlins
-SP Gio Gonzalez was 3-2 with a 4.59 ERA in six July starts
Miami Marlins
-Gone 5-4 versus the Nationals this year, but 0-2 in DC
-The Marlins are 38-26 all-time in the nation’s capital, including a 26-11 mark at Nationals Park
-Miami has produced a 31-39 record in 35 previous doubleheaders as a franchise
-SS Jose Reyes owns a 20-game hit streak, longest in the majors (.342 average)
-SP Josh Johnson is 2-0 with a 4.80 ERA in five career starts at Nationals Park
Pittsburgh Pirates
-Since May 25, the Pirates (40-20) and Reds (39-22) have the two best records in baseball
-Gone 8-2 with a 3.34 ERA at the GABP in their last 10 games, while averaging 5.4 runs per game offensively
-Hit the most road HRs in the NL this season (75)
-SP Wandy Rodriguez is 4-4 with a 3.90 ERA in 11 starts at GABP
Arizona Diamondbacks
-Coming off a stretch of 20 games in a row (12-8), longest stretch to date
-Bullpen has a 1.35 ERA over the last 11 games, while posting a major league-best 2.21 ERA since June 22
-Rank third in the NL with a 3.36 road ERA
-SP Ian Kennedy’s career 2.95 ERA after the All-Star break is the ninth-best mark among all pitchers since 2007 (min. 200 IP)
-Gone 10-2 in Kennedy’s 12 starts in August since 2010
Baltimore Orioles
-Gone 14-20 in series-opening games, including 8-9 on the road, winning just two of their last 10 overall
-SP Tommy Hunter has received just 35 runs of support over his last 14 starts when in the game, with 11 of those coming in one outing
-Offense is batting .323 over the last six games, collecting double-digit hits in five of those contests
-Hunter is 0-1 with a 7.88 ERA in two starts at Tropicana Field
-Only 13 of Hunter’s 34 career road starts have been quality ones
-Hunter has a 5.88 career ERA in August, his second-highest month (May, 6.82)
Boston Red Sox
-Posted an AL-best 22-12 (.647) record when facing left-handed starters (Giants and Cardinals .656 win percentages)
-Gone 23-11 against the Twins since 2007, the best mark against any AL team in that time
-Top AL offenses with 5.69 runs per game versus AL Central opponents
-SP Felix Doubront is 5-0 with a 2.97 ERA in five career starts versus AL Central teams
-Doubront is 5-1 with a 3.55 ERA in nine starts following a team loss (7-2 team record)
Chicago White Sox
-Won 10 of their last 11 home games, outscoring opponents by a 76-36 margin
-SP Philip Humber is 0-7 with a 5.92 ERA in his last 14 home starts
-Lead the majors with a .293 average with RISP
-Bullpen has a 1.04 ERA in the last 10 games
-Humber has gone 5-1 with a 2.09 ERA in 12 career appearances (seven starts) versus AL West opponents, including a 5-0 mark and 2.11 ERA in his last six
Cleveland Indians
-Swept in back-to-back three-game road series
-Gone 7-2 against the Tigers this year, with six of those wins by a one or two-run margin
-Relievers have a 2.64 ERA since the All-Star break, second-lowest in AL (Rays, 1.48)
-Bullpen is 3-0 with a 1.05 ERA in nine games against the Tigers
-SP Justin Masterson is 0-2 with a 5.11 ERA in two starts at Comerica Park
-Masterson is receiving an average of 3.30 runs of support, lowest in the AL
Minnesota Twins
-Hitting .272 against left-handed pitching, second-best mark in the AL
-The last left-handed starter to record a victory against the Twins was on July 19
-C Joe Mauer is hitting an AL-best .352 since May 20
-Hitting an AL-low .236 on the road this season, with just 41 HRs
-Brian Duensing is 1-4 with a 7.45 ERA as a starter this season (five starts)
-Duensing has limited left-handed batters to a .174 average this year (15 for 86)
New York Yankees
-SP CC Sabathia has won each of his last seven starts against the Mariners (0.88 ERA)
-Sabathia has allowed one earned run or less in nine of his last 10 starts in this series
-Posted a 23-11 record in series openers, going 13-4 at home
-Homered in each of their last 20 home games, matching their longest such streak inside the current Yankee Stadium
Seattle Mariners
-Bullpen has a 2.37 ERA since June 1
-Fourth in the majors in road scoring and second in the AL in runs per game (4.87)
-Outscored opponents by a 112-79 margin since July 2
-Pitching staff is 7-0 with a 2.29 ERA over the team’s seven-game win streak
-SP Kevin Millwood is 2-1 with a 5.89 ERA at the current Yankee Stadium
Tampa Bay Rays
-In their last 11 games, the Rays and their opponents have combined to hit .199
-At 23-18, have the best interdivisional record among AL East teams (11-6 at home)
-SP Matt Moore is 1-1 with a 3.09 ERA in three career appearances (two starts) against the Orioles
Texas Rangers
-Gone 13-6 against Kansas City since 2010, including 4-2 at Kauffman Stadium
-Since 2005, the Rangers are 38-21 (.644) in the series, easily their best winning percentage against any opponent
-Possess the AL’s lowest ERA on the road (3.59)
-SP Matt Harrison is 14-7 with a 3.00 ERA in 26 road starts since 2011
Chicago Cubs
-Gone 2-1-1 in their last four road series after going 1-9-3 in their first 13
-Chicago is 8-8 against NL West opponents this year
-SP Jeff Samardzija is 4-3 with a 2.18 ERA in nine night outings, striking out 64 batters and walking 18