The Mets made one thing clear to the Nationals: They are going to be tough to deal with in the National League East. But Washington prevailed, 7-6, on a walk-off single by Bryce Harper in the 12th inning at Nationals Park.

The Astros jumped out with six early runs and received a solid start from Lucas Harrell before staving off a late Cardinals rally en route to a 9-8 win on Tuesday at Minute Maid Park.

Ryan Dempster and the Cubs could finally celebrate a “W” as Alfonso Soriano hit a three-run homer, Bryan LaHair added a solo shot and pinch-hitter Jeff Baker hit a two-run blast to help post a 10-0 victory over the Brewers, ending their road losing streak at 11 games.

On Wednesday, the Yankees will send Ivan Nova against 24-year-old righty Alex Cobb and the Rays, who sit with the Orioles atop the American League East, a half-game ahead of New York.

Johnny Cueto hopes to stop Brad Lincoln and the Pirates after the Reds fell to their division rival on Tuesday night. Going into Tuesday's game, the Pirates trail the Reds by just two games in the NL Central.

Felipe Paulino and the Royals play host to the Twins in the rubber match of a three-game series. Minnesota sends right-hander Nick Blackburn to the hill.

After dropping the series opener to the rival Braves by an 11-0 score, the Marlins turn to their ace, Josh Johnson, as they try to even the series Wednesday night. Randall Delgado, coming off a win in his previous start, gets the nod for Atlanta.

Once Bruce Chen got going this season, he's been tough to beat. He notched his fifth victory in his past six starts on Tuesday night as the Royals defeated the Minnesota Twins, 1-0.

Indians starter Ubaldo Jimenez turned in a strong performance and the offense collected a trio of triples to pick up a 4-2 victory over the rival Tigers on Tuesday night at Comerica Park.

With their 13th-round pick in the 2012 First-Year Player Draft, the Mets selected Matthew Bowman, a right-hander out of Princeton with a lively fastball-changeup-slider combo.

With a different bat and a brace on his right thumb, second baseman Dustin Pedroia returned to the Red Sox's lineup Tuesday night at Fenway Park against the Orioles.

Colby Rasmus went 5-for-5 and finished a triple shy of the cycle in the Blue Jays' 9-5 victory over the White Sox on Tuesday night at U.S. Cellular Field. Ricky Romero (7-1) picked up the win and Brett Lawrie added three hits.

The Mets are about to grow a bit healthier, with Jason Bay likely to return from the disabled list in time for Wednesday's game against the Nationals.

The Orioles overcame some questionable defense, a five-inning start and a blown save from closer Jim Johnson to score a pair of 10th-inning runs and take a series-opening 8-6 win over the Red Sox in front of a sellout crowd at Fenway Park.

The Chad Billingsley the Dodgers keep waiting for showed up Tuesday night to duel Cliff Lee, while the Elian Herrera the Dodgers never knew they had again beat the Phillies, 2-1, with a two-run, two-out double in the eighth inning.

Alex Presley, Neil Walker and Casey McGehee each homered to back A.J. Burnett, who allowed three earned runs in five innings, lifting the Pirates to an 8-4 victory over Cincinnati in the opener of a three-game series at
Great American Ball Park.

The Mets will call upon Jeremy Hefner to make his third career start in Johan Santana's place as New York battles Edwin Jackson and the first-place Nats on Wednesday.