Way under the radar, Mitch Keller is pitching the best ball of his career. The season numbers show a 3-8 record and 4.21 ERA. But Keller has been pitching great during his last five starts giving up just six earned runs during this 31-inning span. 

If given 1 1/2 runs, Pittsburgh would be 7-2 in Keller's last nine starts. One of those losses was 2-0 to the Rockies at Coors Field. 

Arizona is pitching Madison Bumgarner, who is on the downside of his career. He's 6-10 with a 3.96 ERA. Bumgarner has surrendered 14 earned runs in 24 2/3 innings during his last four starts allowing 30 hits and eight walks. He's given up a home run in four of his last five starts.