"He's been big for us, leading off and playing a great center field," said White Sox manager Robin Ventura of De Aza. "It's just, again, we're looking at our roster.
"We've got three extra guys. If he's not able to play, we're down to two. There are some decisions to be made pretty quickly."
Jordan Danks started in right field for Triple-A Charlotte against Durham on Monday night, but Danks was pulled after three innings. No official word was given as to whether Danks was on his way to Chicago, but he is expected to be De Aza's replacement on Tuesday.
Losing the offense's catalyst in De Aza certainly hampers the team's effort. But general manager Ken Williams pointed out that the White Sox win and lose as a group.
"Everyone in the lineup and on this pitching staff matters," Williams said. "We are a team that is not reliant on one particular person, but when an important piece is missing, you're going to notice.
"Dewayne Wise has stepped in during De Aza's absence here and played very well, so you can't say that is the reason why we haven't been clicking lately. We just haven't caught the ball and we haven't scored any runs."