Colorado Rockies right-hander Tomoyuki Sugano will not take the mound Saturday against the visiting San Francisco Giants after being scratched from his scheduled start because of back spasms.
Stepping in to fill the role will be rookie left-hander Sean Sullivan, who carries a 0-2 record and an 8.64 ERA into the Denver contest.
Sugano, who is 36 years old and holds an 8-4 record with a 4.80 ERA this season, had been pitching well throughout June. He went 4-0 across five starts that month, though his ERA during that stretch was 6.58. His teammates provided him with a combined 40 runs of offensive support across those four victories.
Sullivan, 23, most recently pitched Monday against the Miami Marlins, where he gave up five runs on six hits over 4 2/3 innings and walked away with a no-decision. Saturday’s matchup will mark his first career appearance against San Francisco.
