On Wednesday, Indians manager Manny Acta noted that the team is awaiting the results of an MRI exam on Hannahan's back. After the team's medical staff analyzes the results, Cleveland will be better able to determine whether Hannahan needs to be placed on the disabled list.
"We'll have to wait until the image comes back," Acta said, "and see how he shows up [on Thursday]."
For Wednesday's game against the Mariners, Jose Lopez got the nod at third base, making it the third straight game that he has filled in for the injured Hannahan. The Indians initially described the injury as back tightness.
Through 30 games for Cleveland this season, Hannahan has hit .287 with three home runs, six doubles and 18 RBIs. The third baseman has been one of the Tribe's top performers with runners in scoring position, batting .393 (11-for-28) with 17 RBIs with RISP.