The Chicago Cubs placed second baseman Nico Hoerner on the injured list Friday with a left hamstring strain and recalled utility man Miles Mastrobuoni from Triple-A Iowa.
The IL move is retroactive to Tuesday.
The Cubs also activated left-handed pitcher Brandon Hughes from the 15-day IL and optioned right-hander Javier Assad to Triple-A.
Hoerner, 25, was batting .303 with two home runs and 19 RBIs in 35 games for the Cubs this season after he signed a three-year contract extension during spring training. In five seasons with the Cubs, he is a .281 hitter with 15 home runs and 120 RBIs in 282 games.
Mastrobuoni, 27, was 4-for-20 in eight games with the Cubs earlier this season. In 16 career games for the Tampa Bay Rays (2022) and Chicago over the past two seasons, he is 7-for-36 (.194) with a double and two RBIs.
Hughes, 27, appeared in five games for the Cubs before left knee inflammation flared up. He went 0-1 with a 3.18 ERA in 5 2/3 innings of relief.
Assad, 25, was 0-2 with a 5.09 ERA in five games (one start) for Chicago this year.
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