"Hopefully that's the extent of it for him. We want to make sure he is 100 percent healthy when he comes back," Melvin said. "We're not looking at surgery, so in that regard we're fortunate."
Cespedes strained a different muscle in the same hand last year. He was batting .200 with three home runs and seven RBIs playing in the first 11 games of the season. As a rookie last season, the Cuban defector batted .292 with 23 home runs and 82 RBIs in 129 games, finishing runner-up to the Los Angeles Angels' Mike Trout for AL Rookie of the Year.
Stanton also had an MRI Saturday, and it showed a bruised left shoulder that caused him to miss his second straight game for the Marlins, who began the day a big league-worst 1-9.
Stanton is hitting .167 without an RBI. He thinks he was hurt trying for a diving catch in the fourth inning of a game April 6 game at the New York Mets.
"It's the best possible news," Miami manager Mike Redmond said. "Obviously, you have someone like him out and it's tough. The other guys just have to step up."