Alexander (wrist) exited Saturday's game against the Padres in the bottom of the second inning, Alex Weiner of ArizonaSports.com reports.
Alexander was struck in the wrist by a 88 mph changeup from Padres starter Michael King in the top of the first, and he was ultimately forced to leave the game in the following frame. Tim Tawa replaced him in the lineup and took over at first base while Ildemaro Vargas shifted to third base versus San Diego.