Friday Matchup: Reds (Sonny Gray) at Rockies (Jon Gray), Coors Field, 6:40 p.m.

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It's a Gray night at Coors Field on Friday.

Jon Gray will be the starting pitcher for the Rockies. Sonny Gray will take the mound for the Reds in the opening game of a three-game series. The Reds arrive two games behind the Rockies in the Wild Card Race, and 4 1/2 back of the No. 2 Wild Card spot.

Jon Gray is unbeaten in his career against the Reds, going 4-0 in four starts. Sonny Gray has never faced the Rockies.

Jon Gray has his challenges in the Reds lineup with Joey Votto (.583) and Yasiel Puig (.412).

Sonny Gray has only faced four players on the Rockies roster, led by Chris Iannetta, who is 1-for-15 against him.