Adam Wainwright takes aim at a National League-leading 15th victory of the season on Friday night when the St. Louis Cardinals play the second contest of a four-game series with the Atlanta Braves. Wainwright enters this start 14-7 with a 2.66 earned run average in 26 starts, tying him with Washington's Jordan Zimmermann for the most wins in the league. The Braves counter with Kris Medlen, who has won each of his last four starts but picked up a losing decision when pressed into emergency relief last Saturday versus Washington. Medlen pitched the final three frames of a 15-inning loss, giving up the deciding run on a solo homer. He dropped to 10-11 with a 3.71 ERA in 25 games this year, all but one of those starts. Game time is 7:15. The Cardinals are in second place in the NL Central one game behind first place Pittsburgh.