Anderson (hamstring) is awaiting the results of an MRI on Monday, James Fegan of The Athletic reports.

EDGE Analysis

Anderson left Sunday's game against the Angels with a tight left hamstring. Initial reports indicated that he wasn't expected to miss time, but manager Tony La Russa now says the team will be happy to have him back by Thursday. Scott Merkin of MLB.com notes that Anderson was feeling better Monday and was able to do some running, but the team has yet to receive the shortstop's test results.