But after Hafner took another round of swings in the indoor cages Sunday morning at Progressive Field, the Tribe decided another week of strength-building exercises on the shoulder is in order.
"He's still not where he needs to be," manager Eric Wedge said. "We'll keep giving him more time. He's a little bit better but not to the point where we can send him on a rehab [assignment] yet."
Wedge said it doesn't look as though Pronk will be ready to rehab while the team is gone, so the Indians will likely re-examine the situation when they return to Cleveland.
Hafner, who was placed on the DL on May 30, is expected to need at least a week of action in the Minors to test out the shoulder and gauge his readiness to rejoin the club, so his return won't come until the end of the month, at the earliest.
Pronk is batting just .217 with four homers and 22 RBIs in 46 games this season.
Anthony Castrovince is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.