Giants rookie Dereck Rodriguez goes on DL with hamstring injury

CINCINNATI -- The San Francisco Giants have placed standout rookie right-hander Dereck Rodriguez on the 10-day disabled list with a strained right hamstring.

Right-hander Casey Kelly is now scheduled to start Friday in the series opener against the Reds. The move is retroactive to Monday, then Rodriguez was injured during a scrum between the Giants and Dodgers on Tuesday night in Los Angeles. The team says he suffered a Grade 1 strain.

Rodriguez, the son of Hall of Famer Ivan "Pudge" Rodriguez, is 6-1 with a 2.25 ERA in 14 outings with 12 starts this season. The Giants have gone 9-3 in his starting outings.

Kelly (0-1, 1.42 ERA) pitched five scoreless innings of relief Saturday against Pittsburgh in his first major league appearance since 2016 then took the loss Wednesday night at Dodger Stadium.