Red Sox pitcher Justin Masterson lasted only five innings yesterday against the Phillies but got the win.

AP / Tom Mihalek

PHILADELPHIA — Justin Masterson got credit for the win against the Phillies yesterday.

But the rookie right-hander, now 4-1, was well aware that to a large degree he was simply along for the ride. He didn’t have his best stuff, lasting only five innings.

Masterson, staked to a 4-0 lead before he had thrown his first pitch, walked only two, but was often behind in the count, which is why he ended up throwing 92 pitches over the five innings. He gave up four hits and a pair of runs.

“I was effectively wild, which helped me out a little, and I was able to make some pitches when I needed to, but the offense put runs on the board and the defense did what it does, making great plays. That’s why we won,” Masterson said.

Manager Terry Francona agreed that it wasn’t Masterson’s best outing.

“He was a little inconsistent with his arm slot, which resulted in a lot pitches for five innings,” Francona said. “But he competed like he always does.”

Around the bases

Hall of Famer Robin Roberts threw out the ceremonial first pitch on the 60th anniversary of his first big-league start. Roberts won 238 games for the Phillies (286 in his career), and threw a Phillies record 272 complete games . . . The Sox are planning some sort of tribute for the Celtics for tomorrow night, though details weren’t finalized as of yesterday afternoon . . . The homers for J.D. Drew and Mike Lowell in the first inning marked the ninth time the Sox have gone back-to-back, tops in the majors, and the sixth time in the last 17 games . . . Dustin Pedroia had at least one hit in each of the six games on the road, going 11 For 26 (.423). That modest streak has snapped a dreadful 12-for-81 stretch that had dropped his average to .260, from .307. His average is back up to .274. … Julio Lugo had a double in each of the three games against the Phillies . . . The crowd of 45,187 was the Phillies’ 19th sellout of the season.

skrasner@projo.com