CINCINNATI (AP) — Trevor Cahill gave Arizona what it needed — a solid start that rested the bullpen. The Diamondbacks' offense couldn't hold up its end.
Mike Leake pitched into the eighth inning and singled home a run — a rare commodity for the Reds these days — leading Cincinnati to a 3-0 victory over the Diamondbacks on Tuesday night.
Leake (8-9) gave up five hits in 7 2-3 innings, repeatedly pitching out of threats by getting ground balls.
"That ball was moving more than normal," Arizona catcher Miguel Montero said. "His sinker was working."
The Reds won for only the second time in 11 games since the All-Star break. The offense has been the biggest problem, scoring only 20 runs — by far the fewest in the majors over that span. Leake pitched in that way, too.
His single off the glove of diving third baseman Martin Prado drove in a run in the second off Cahill (1-8), who has yet to win as a starter this season.
"Fantastic job," third baseman Todd Frazier said. "We needed it."
Frazier and Brayan Pena had RBI singles off Cahill, who fell to 0-6 in seven starts this season.
Cahill gave up seven hits in six innings. He retired 11 straight over one stretch and didn't walk a batter for the second consecutive start.
"I can't remember the last time that happened," Cahill said.
It was an encouraging performance for Cahill.
"He threw the ball better," manager Kirk Gibson said. "He's going to get confidence out of it. We've got to score some runs for him."
A Reds lineup already missing first baseman Joey Votto and second baseman Brandon Phillips — both on the disabled list — also was without right fielder Jay Bruce, who went on bereavement leave for his grandfather's death.
Aroldis Chapman pitched the ninth for his 23rd save in 25 chances. He extended his streak of at least one strikeout in 45 consecutive appearances, a major league record for a reliever.
Diamondbacks: Gibson needs one more win to tie Bob Melvin (337) for most by a Diamondbacks manager. ... Left-hander Wade Miley (6-7) starts the final game of the series before Arizona returns home to face Pittsburgh. Miley is 3-1 with a 2.94 ERA in his last five starts.
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