Arizona at Houston

Zack Greinke has been somewhat of a disappointment after his big free agent signing by Arizona as he is 6-3 but with a 4.71 ERA. The right-hander won his last start 8-7 over San Diego, but he allowed four runs and six hits in six innings while striking out only two batters. Houston is surging after a terrible start, winning five in a row and eight of its last nine games and the Astros go for the sweep of the Diamondbacks today. Arizona has lost seven of its last nine contests while giving up an average of 7.3 runs per game. Dallas Keuchel is coming off a 4-2 win at the Angels when he allowed just two runs and three hits and no walks in seven innings. Keuchel still is trying to get back on track and he has a good opportunity against the Diamondbacks hitters, who are hitting just .136 against him. Play the Astros to extend their winning streak.