Looking to buy their starting pitchers some rest during the final three weeks of the season Ryan Zimmerman Jersey , the St. Louis Cardinals have opted for a six-man rotation on this turn through it.The sixth man goes Wednesday against the Pittsburgh Pirates in Busch Stadium, where St. Louis tries for a series sweep and to solidify its postseason position.Rookie Daniel Poncedeleon (0-1, 2.67 ERA) gets the call for the Cardinals, who moved three games ahead of the Los Angeles Dodgers for the National League’s second wild card spot Tuesday night. They routed Pittsburgh 11-5 while Los Angeles continued its season-long pratfall against Cincinnati, losing 3-1 to fall to 0-6 against the Reds.Article continues below ...Poncedeleon will make his first big league appearance against the Pirates and his fourth start in 10 big league games.