It appears as though the decision was primarily made to give Buehrle some additional rest between outings. Buehrle admitted last month that his body hasn't been feeling 100 percent, but also was quick to point out that's usually the case at this time of the year.
Buehrle surrendered nine runs over 10 innings in a pair of starts on Aug. 19 and 25. He bounced back with a quality outing against the Tigers on Sunday, but his velocity was down a little bit and the club is looking to find ways to keep him fresh down the stretch.
There is no concern about the possibility of a stint on the disabled list, but this is a way for the club to take advantage of a favorable schedule this week. Price gets to start on regular rest and will still face the division-rival Orioles this weekend.
Gregor Chisholm is a reporter for MLB.com. Read his blog, North of the Border, follow him on Twitter @gregorMLB and Facebook, and listen to his podcast. This story was not subject to the approval of Major League Baseball or its clubs.