Slugger Matt Kemp will be sidelined at least four weeks after he suffered an additional injury to his left hamstring, Dodgers head trainer Sue Falsone said Thursday.

Kemp was playing in only his second game back from a 15-day stint on the disabled list when the center fielder hurt the hamstring again trying to score from first base in Wednesday's game.

An MRI exam revealed "he has a little bit of swelling in the same area as well as a new strain in a different part of that hamstring," Falsone said.

Both were so-called Grade 1 strains, meaning "there's not a lot of muscle fiber tear," she said. "It's the lowest grade of muscle strain, so that's good news."