The Pittsburgh Pirates placed infielder Jared Triolo on the 10-day injured list Sunday with a right knee patellar tendon injury. The move is retroactive to April 4, as the injury occurred in the home opener.

Triolo was batting .217 (5 for 23) with a double, an RBI and two runs scored in six games for the Pirates. He started five games at shortstop before the promotion of No. 1 prospect Konnor Griffin, then started at third base in the home opener. Triolo did not play Saturday.

Outfielder Billy Cook has been recalled from Triple-A Indianapolis, where he went 3 for 9 with a home run and two RBIs in two games.

Cook made the Pirates’ Opening Day roster and scored a run while appearing in three games from March 28-30 before being optioned to Indianapolis on Thursday to make room for Griffin.

“It was good to get some at-bats,” Cook said. “You can hit off Trajekt machine, whatever, but until you get in a game, it’s not the same. So that was nice (to) see some live pitching, get out and play full nine innings and everything, just getting back in the swing of that. It’s been a minute since spring training.”