In his Cardinals debut, Holliday augmented four hits with an RBI and a stolen base in an 8–1 win, for his 15th career four-hit game. He reprised his debut with 20 hits in 33 at bats in his next nine games for a .606 batting average, a .659 on-base percentage, a 1.061 slugging percentage, six doubles, three homers and 10 RBI. Each of those nine games featured Holliday with at least one hit and twice reaching base. His combined totals in July 26 games with Oakland and St. Louis included 40 hits, 20 runs scored, a .412 batting average, a .487 on-base percentage, a .612 slugging percentage, 13 doubles, four home runs, 22 RBI, 16 walks and four stolen bases. The Cardinals segued into improved play with a 20–6 record in August to stretch a National League Central division lead from one-half game on August 1 to ten on September 1 In the third inning against the Milwaukee Brewers on September 3, he collected his 1,000th MLB hit.