Pitcher Stephen Strasburg was placed on the 15-day disabled list with a back strain by the Washington Nationals, who lost 10-1 to the New York Mets.
Marlon Byrd hit two home runs for the Mets and David Wright added a third last night at Nationals Park.
Dillon Gee (4-6) allowed one run on nine hits and struck out seven in seven innings for the Mets (23-33). Dan Haren (4-7) surrendered five runs on seven hits in four innings for the Nationals (29-30).
Strasburg sustained the injury at the Atlanta Braves on May 31, when he threw 37 pitches in two innings, the shortest outing of his Major League Baseball career.
Strasburg is eligible to return on June 16. He was placed on the disabled list, retroactive to June 1, after being unable to pitch a bullpen session yesterday, the Nationals said on their website.
Strasburg, who was due to start June 8 at home against the Minnesota Twins, is 3-5 with a 2.54 earned run average and 73 strikeouts in 74 1/3 innings this season.
The pitcher, who signed a record $15 million, four-year contract in 2009, set a major league record with 41 strikeouts in his first four starts in the 2010 season and went 5-3 with a 2.91 ERA and 92 strikeouts in 68 innings.
His career was interrupted by surgery on Sept. 4, 2010, to replace a ligament in his throwing arm. He spent most of the 2011 season recovering from the surgery. Last year, he went 15-6 with a 3.16 ERA.
The Nationals are in third place in the National League East, eight games behind the division-leading Braves.