Right-hander Luke Weaver entered spring training with a chance to win the last spot in the Cardinals’ rotation, but that bid officially ended when they optioned him to Triple-A on Saturday. Weaver dealt with back spasms earlier this month and performed poorly when on the mound. In five spring innings, the 23-year-old allowed seven earned runs on seven hits and eight walks, and struck out only one hitter. Michael Wacha has fared much better, meanwhile, and taken hold of the No. 5 role as a result, according to Derrick Goold of the St.