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Blanco in center, leading off

Gregor Blanco is playing in center field in place of A.J. Pollock and will bat leadoff for the Diamondbacks in Sunday’s game against the Rockies. Taijuan Walker will take the mound with first pitch scheduled for 12:10 p..m.

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Sunday’s game

Diamondbacks at Rockies

When: 12:10 p.m.

Where: Coors Field, Denver.

Pitchers: Diamondbacks RHP Taijuan Walker (3-1, 4.19) vs. Rockies RHP Tyler Chatwood (2-4, 5.40).

TV/Radio: FSAZ/KMVP-FM (98.7), KHOV-FM (105.1).

Walker gave up three runs on five hits and five walks in 4 2/3 innings against the Nationals on Tuesday, a game the Diamondbacks won 6-3. … Walker has made one start in his career at Coors Field, allowing three runs in 7 1/3 innings in a game in 2015. … Walker has pitched well when opponents have had runners in scoring position, holding them to a .233 average and a .602 OPS in 38 plate appearances. … Chatwood has a 7.16 ERA in three starts at Coors Field and a 3.98 ERA in three starts on the road. … This will be his first start against the Diamondbacks this season, but he has a 4.39 ERA in 41 innings against them in his career. … Chatwood is averaging 95 mph with his fastball, up from 93.2 mph last year.

Coming up

Monday: Off.

Tuesday: At Chase Field, 6:40 p.m., Diamondbacks LHP Robbie Ray (2-2, 3.47) vs. Tigers RHP Justin Verlander (2-2, 4.21).

Wednesday: At Chase Field, 6:40 p.m., Diamondbacks RHP Zack Godley (0-0, 3.60) vs. Tigers LHP Matt Boyd (2-2, 3.78).

Thursday: At Chase Field, 6:40 p.m., Diamondbacks RHP Zack Greinke (3-2, 3.09) vs. Pirates RHP Chad Kuhl (1-2, 5.54).