Center fielder Angel Pagan watched Sunday night's game from the bench with a right-hamstring strain and could miss Monday night's series opener against Philadelphia, too, temporarily slowing his quest for the league lead in runs.

Through Saturday, he was tied for second with 24, behind the Rockies' Carlos Gonzalez (26).

During a conversation about stealing bases, which Pagan has not done much in 2013, he said the only stat that really matters for him is runs. He scored a career-high 95 last year and wants to surpass 90 again. He is well on his way.

Like the entire team, Pagan has been very selective - for a fast runner - on when he runs. He has four steals in six attempts and had only one as late as April 24.

"I'm a base-stealer, but I'm not going to steal a bag just to steal," he said. "I'm trying to be as smart as I can. I'm not stealing a lot of bags, but I'm scoring a lot of runs. If I steal 50 bases and don't score a lot of runs, it doesn't mean anything."

Pagan said he is seeing more pitchouts and throws to first this year. Also, the longer he stays at first base, the more fastballs Marco Scutaro sees.

Through Saturday, the Giants were well off the league lead with 16 stolen bases but ranked second with an 84 percent success rate (16-for-19), an improvement over last year's 75 percent (118-for-157). They have speed, but do not want to use it recklessly.

Nor do Pagan and the Giants want to be reckless about his injury, which he felt while fielding Matt Kemp's two-run single in the fifth inning Saturday night. Pagan hopes to play Monday, but manager Bruce Bochy called him "questionable."