Jose Reyes and Hanley Ramirez continue to take off whenever they can.
"That's a big loss, losing Boni, but we're still going to play the same game, being aggressive," Reyes said. "When me and Hanley get on, we are trying to get ourselves in scoring position. We know Boni is out. Now we need to step up."
Bonifacio, who leads the Majors with 20 steals, went on the disabled list last Sunday with a left thumb sprain. The speedster will undergo surgery on Friday to repair a ligament, and he's expected to miss four to six weeks.
Bryan Petersen, Chris Coghlan and Kevin Mattison can all play center field.
"Obviously, we're losing a big piece, but everybody has got to step it up," manager Ozzie Guillen said. "I expect Coghlan and Petersen to get on base enough to get a shot at stealing bases. I'm not going to say we've got a very fast team, but we can run the bases. When know when to pick our spots to steal bases."
Reyes now has 13 steals, which is tied for the second most in the game. And Ramirez has nine stolen bases.
The Marlins are enjoying one of the best months in franchise history. They've got themselves back in the race.
Reyes is the primary candidate to keep the running game going. The shortstop, after a slow start, is starting to get back into form. He's batting .292 in May after posting a .220 average in April.
"I'm not on the top of my game yet," Reyes said. "I know when I am on top of my game, and being consistent every single day, I think it's going to be better. I know when I start to get on base a lot, we're going to score a lot of runs."