Miami Marlins third basemen Martin Prado was diagnosed with a grade 1 hamstring strain on Sunday, according to Marlins beat reporter Joe Frisaro.

Prado pulled up lame after running out a ground ball last Wednesday against Team USA in the World Baseball Classic. Prado is also experiencing some right calf discomfort as well, but it’s not serious.

Don Mattingly says that they aren’t going to put a timetable on his return so he can rehab without feeling rushed to get ready. With Prado out, Derek Dietrich and Miguel Rojas are expected to split time at third until Prado is 100%.

“I was worried, yeah,” says Prado, “…I was just concerned and disappointed that I let my teammates down.”

Last season Prado posted a slash of .305/.359/.417 with eight long balls, and 75 RBI’s.