Nationals right fielder Jayson Werth had left wrist surgery on Monday. He is expected to be out at least 12 weeks. It is believed a steel plate was inserted in his wrist.

The Phillies have their next great rival. Cole Hamels cemented that when he drilled a 93-mph fastball into the small of Bryce Harper's back in the bottom of the first inning in Sunday's 9-3 victory over the Nationals at Nationals Park.

Each day, MLB.com selects one player from each game whose performance stands out. Here are the May 6 Mane Men of the Day.

Roy Halladay will be plenty eager to get out and pitch again on Monday against the Mets, who have won two straight after dropping four in a row and counter with left-hander Jon Niese.

Nationals right fielder Jayson Werth broke his left wrist while attempting a sliding catch in Sunday's 9-3 loss to the Phillies.

About the last thing Chris Davis ever expected to do was pitch a game for the Baltimore Orioles. Because he did, he'll remember Sunday as one of the really special days in his career.

Tony Campana hit a game-tying RBI double in the ninth inning, and David DeJesus drew a walk-off walk with the bases loaded in the 11th to lift the Cubs to a 4-3 victory on Sunday over the Dodgers and take the series.

Will Middlebrooks struck his first Major League home run on Sunday afternoon at Fenway Park, and it was a game-tying grand slam in Boston's eventual loss to Baltimore.

Albert Pujols went deep for the first time with the Angels on Sunday, and Jerome Williams was solid as the Halos edged the Blue Jays.

In a marathon six-hour, 17-inning game that featured both teams sending its designated hitter to pitch, it was the Orioles — behind the stealth throwing of infielder Chris Davis — who persevered for a 9-6 win and series sweep of the Red Sox in front of a sellout crowd at Fenway Park.

Albert Pujols' homerless streak finally ended in the fifth inning on Sunday afternoon, when the Angels' new first baseman hit one in a 4-3 win over the Blue Jays.

Dodgers supersub Jerry Hairston strained a left hamstring while running out an infield single in the second inning Sunday of a game delayed at the start by two hours and 41 minutes by rain.

Pinch-hitter Hector Sanchez singled home pinch-runner Emmanuel Burriss in the 11th inning to give the Giants a 4-3 walk-off victory over the Brewers on Sunday at AT&T Park.

Ted Lilly and the Dodgers will return to Chavez Ravine on Monday for the team's first home game under Guggenheim Baseball Management, and they welcome the rival Giants and Barry Zito to Dodger Stadium in the opener of a three-game series.

Omar Vizquel became the oldest player in Major League history to take the field at shortstop on Sunday afternoon against the Angels.

Ricky Nolasco gave up two runs in seven innings, and he scored a run in the Marlins' 6-3 win over the Padres on Sunday afternoon at Petco Park. Now 4-0 on the season, Nolasco also won his 68th career game, matching Dontrelle Willis for the most in team history.

Jeff Samardzija will carry a 3-1 record and a 3.41 ERA into Monday night's start against the Braves at Wrigley Field as the teams begin a three-game set. Atlanta's Tommy Hanson, coming off his worst outing of the year, looks to bounce back.