Yadier Molina hit a three-run homer in St. Louis' four-run ninth inning, and the Cardinals beat the Chicago Cubs 10-6 on Sunday night in the majors' final game before the All-Star break.
Allen Craig lined a tiebreaking RBI single into left field before Molina drove an 0-2 pitch from Kevin Gregg (2-2) over the wall in left for his seventh homer.
Craig and Molina tuned up for Tuesday's game in New York with four hits apiece, helping St. Louis to a season-high 21 hits overall.
Chicago went up 4-3 on Darwin Barney's three-run homer in the sixth and pinch hitter Cody Ransom had a tying two-run double in the eighth.
The Cubs' bullpen was unable to hold off the NL's highest-scoring team.