Strasburg Keeps Nationals Alone in First Stephen Strasburg pitched four-hit ball for seven innings and Jesus Flores homered, leading the Nationals over the Atlanta Braves, 2-0, at Washington on Saturday. The Nationals remained alone in first place in the National League East, one game ahead of the Mets and the Florida Marlins. Strasburg (6-1) completed seven scoreless innings for the first time in the major leagues. He opened with a flourish, striking out the first four Braves batters. Strasburg struck out nine, walked none and threw 90 pitches. Twice he gave up singles and then induced double-play grounders. Atlanta has lost three straight and nine of 11. MARLINS 5, PHILLIES 4 Miami's Hanley Ramirez hit his ninth and 10th home runs, and Ricky Nolasco (6-3) improved to 6-1 in seven career starts at Philadelphia. Jose Reyes's run-scoring double extended his hitting streak to 13 games for the Marlins, who won for the fourth time in five games and denied Cole Hamels (8-2) his ninth victory. DODGERS 6, ROCKIES 2 Bobby Abreu hit his first home run as visiting Los Angeles ended a five-game losing streak. Colorado Rockies starter Juan Nicasio left in the second inning with a strained left knee. Last season, Nicasio had surgery to repair a cracked vertebra after he was hit by a line drive. RED SOX 7, BLUE JAYS 4 Second baseman Nick Punto, filling in for the injured Dustin Pedroia, drove in two runs and had three hits, including his first home run, to lead visiting Boston to its 10th victory in 14 games. Felix Doubront (6-2) allowed three runs, two earned, in six and a third innings, improving to 5-1 with a 2.72 earned run average in his past five starts. A'S 9, ROYALS 3 Brandon McCarthy (4-3) came off the disabled list to throw six innings, Jemile Weeks reached base four times and Josh Reddick had a two-run triple as visiting Oakland ended a nine-game losing streak. ORIOLES 2, RAYS 1 Brian Matusz (5-5) held host Tampa Bay to two hits in seven and a third innings, and Baltimore ended a six-game losing streak. The Orioles" Endy Chavez hit his first home run since last Aug. 9. CONTRERAS SERIOUSLY INJURED Phillies reliever Jose Contreras, 40, tore a ligament and a tendon in his right elbow while pitching on Friday and will most likely miss the rest of the season. ... Minnesota Twins pitcher Carl Pavano will return to Minneapolis on Sunday to have a magnetic resonance imaging test on his sore right shoulder.