Asked how he was feeling, Guillen was not upbeat. His description of Monday's back spasms sounded similar to the back problems two weeks ago which turned out to be a pinched nerve and kept him out of action for three days. However, Guillen said, his back had felt pretty good over the weekend before flaring up on Monday.
The discomfort, Guillen said, started in his back and went up and down his right leg. It included soreness in both of his hamstrings, and he felt a little numbness. The latter part could be a concern.
Guillen was examined by a team doctor Tuesday night. He looked somewhat better walking out of the Tigers clubhouse after Tuesday's game, but had no news on his condition.
Manager Jim Leyland said on Tuesday afternoon he had no clearer picture of how long Guillen will be out. However, he stuck by his thought process from Monday night that Guillen will at least miss a couple games to let his back settle down.
While Guillen remains out, Marcus Thames was back in the Tigers lineup on Tuesday after leaving Monday's game with a cramp in his left leg. Thames said the cramp popped up when he was running down the first-base line on his seventh-inning single to left, then worsened as he stopped and restarted going from second to third on Edgar Renteria's single.
"I'm all right," said Thames, who started in left field on Tuesday.
Meanwhile, there was no update on Dontrelle Willis, who left Monday's start at Triple-A Toledo after one inning with tightness in his left forearm. The problem supposedly surfaced Monday before the game and carried into the outing, at which point the Tigers decided not to take any chances.
Jason Beck is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.