Hafner's bruise is on his foot, and Gardner's is on his right leg. The two were each removed from Wednesday's game due to the ailments. Both players had x-rays done on their injuries, and the results came back negative.
After starting the season hot, Hafner has been mired in a deep slump. Since June 1, he has hit .176 with a .564 OPS over 29 games. He has struck out 29 times over that span while drawing just nine walks. Given his struggles, a day or two out of the lineup may have been coming for Hafner soon, anyway.
Gardner, who was removed after being hit by a pitch, had an excellent June with a .330/.372/.881 line. He has cooled off some in July, but has still been an asset to the Yankees.
Neither player should miss much time.