Scott Lauber ESPN Staff Writer
Red Sox 5, Cardinals 4: Mookie Betts needed that. It has been a struggle since the All-Star break for last year's AL MVP runner-up. But down to his last strike with two out in the bottom of the ninth inning, Betts doubled off the Green Monster to drive in two runs and give the Red Sox a walkoff victory and a sweep of the two-game interleague series. Xander Bogaerts' leadoff homer started the three-run ninth inning that saw St. Louis manager Mike Matheny get ejected and catcher Yadier Molina spar with the umpires.