Ramirez needed stitches from punching a cooling fan in the dugout after grounding out in the sixth.
"A very stupid injury," Marlins manager Ozzie Guillen said. "Very immature, very immature. You hurt yourself because you can't hit? Good hitters don't do that."
General manager Mike Hill thought Ramirez would be ready on Friday when they begin a four-game series at home against the Nationals. Ramirez, batting .248 with 12 homers and 44 RBIs, was embarrassed.
"I got mad. I know I've been playing hard but at the same time I've got to produce more. I'll be there Friday, I think definitely. I'm going to die on the field."
Ramirez was 0 for 2 with a walk. He stole third and scored on a throwing error by catcher Tony Cruz in the first. He was 0 for 10 in the series.
Donovan Solano took over at third and in the second slot in the order in the sixth inning.
Information from The Associated Press was used in this report.