PHOENIX -- For the first time this season, Phillies manager Charlie Manuel did not write Hunter Pence's name into the starting lineup.
A much needed break in the midst of a 0-for-15 slump?
Not exactly. Pence injured his left shoulder diving for a ball in the third inning in Sunday's series finale against the San Diego Padres at Petco Park. John Mayberry Jr. was the right fielder for Monday's series opener against the Arizona Diamondbacks at Chase Field.
Phillies general manager Ruben Amaro Jr. said Pence is day to day.
"It is what it is," Pence said. "I'm not in there today."
Pence said he does not know the severity of the injury.
"I haven't got the full diagnosis, so we're not sure yet," he said. "It is what it is. I'm not in there today."
Pence said he was uncertain if he would be available to pinch-hit on Monday.
"I felt it after it happened, but I had adrenaline going [Sunday]. Until this morning when I woke up, I didn't have the mobility that you need," Pence said. "Like I said, I want to try to do more, but they don't want me to. Hopefully, it's not a big deal, but we have to get it checked out first."
If Pence misses a few days it will give Mayberry a shot to get into a groove. He entered Monday's game hitless in his last 12 at-bats.
"Every night he gets to play is a chance for him," Manuel said. "I'd leave him out there every day. He's got to get going. He's got to get some hits. First of all, we have to win games. The game is more important than anything else, anybody else. We need to win the game more than he needs at-bats. It's not about one guy. It's about 25 guys. How do you get to play? Play good."
Todd Zolecki is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.