Rosario exited Monday's game against the Braves with left quad tightness, Tim Healey of Newsday reports.
He couldn't run full speed to first base on a groundout early in the contest and was subsequently pulled with the injury. Andres Gimenez would likely get starts at shortstop if Rosario has to miss time. Rosario was 1-for-2 with a run scored prior to exiting.