Among the highlights were Josh Reddick's seventh inning grand slam, Brandon Moss's twodoubles, home run, single, four runs and four RBI, and catcher George Kottaras' single, pair of homers, three runs and five RBI.
Winning kept the A's one game behind the Orioles in the wild card, but very secure in the #2 wild card slot, 3 1/2 better than Tampa Bay and four up on the Tigers.
While their wild card chances appear solid, the A's no doubt have taken aim at the Rangers as August turns to September and contenders are separated from pretenders.
While the Cardinals may bemoan life on the road, the playing doesn't get much better for the NL East-leading Nationals, winners of three straight while the second place Braves have dropped their last two, upping Washington's lead to a bulging 6 1/2 games. the largest in either league.
A master of the mound throughout the season, Gio Gonzalez picked up win #17, tying Johnny Cueto and R.A. Dickey for the major league lead.
Gonzalez, who has tasted defeat just seven times this season, shut out the Cardinals on five hits, fanning eight and walking three.
The Nats and Cards have two games remaining in their four game series, with a pair of day games Saturday and Sunday.