This will be Heston's first career appearance against the Cardinals. Ominously, his road ERA (4.45) is nearly two runs higher than his home ERA (2.48).
Wacha will be facing the Giants for the first time since serving up Travis Ishikawa's walk-off home run, which sent the Giants past the Cards in the 2014 National League Championship Series. Wacha has allowed just two runs over his last 20 innings.