CINCINNATI (AP) -- Bronson Arroyo limited the NL's most prolific offense to four singles in eight innings, and Jay Bruce had a two-run homer among his three hits, leading the Cincinnati Reds to a 3-0 victory over the Colorado Rockies on Monday night.
The Reds have three shutouts in their last four games. They've blanked out six of their last 21 opponents, tying them with St. Louis and Pittsburgh for the league lead with nine shutouts this season.
Arroyo (6-5) allowed only one runner to reach second base while throwing 86 pitches. Aroldis Chapman gave up a walk and fanned three in the ninth, getting his 15th save in 17 chances.
Bruce scored on Todd Frazier's single in the fourth inning off Tyler Chatwood (3-1) and hit his ninth homer off left-hander Josh Outman in the eighth.
The Rockies' pitching staff had a setback for the second day in a row. Chatwood left with a sore triceps after pitching only four innings. Rockies closer Rafael Betancourt went on the 15-day disabled list over the weekend with a strained groin.
Chatwood batted in the fifth, bunted and was thrown out. Rob Scahill had been throwing in the bullpen and replaced Chatwood, who threw 64 pitches and allowed four hits and one run.
The right-hander was coming off one of his noteworthy starts. He fanned a career-high 10 in six innings against Houston.
Arroyo came in with a 4-8 career record against the Rockies, but kept them off balance from the start. His first three pitches of the game clocked 70, 72 and 72 mph. His pitches occasionally dipped to 69 mph.
The Rockies lead the NL in runs, but couldn't do much with those many oh-so-slow deliveries.
The Reds have gone only 3-3 in the past week because of a slumping offense. They used a couple of well-placed hits to get a run in the fourth.
Bruce went the opposite way to left field, beating Colorado's infield shift, for a single with two outs. He stole his first base of the season and came around when Frazier flicked a low-and-away pitch to left field, one hand leaving the bat as he made contact. Bruce scored as Carlos Gonzalez's throw to the plate hit him in the back.
Zack Cozart singled in the eighth ahead of Bruce's homer, extending his hitting streak to a season-high eight games.
NOTES: RHP Juan Nicasio (4-2) makes his first career start against the Reds on Tuesday. Homer Bailey (3-4) starts for the Reds. ... Plate umpire Kerwin Danley took a deflected pitch off his facemask in the bottom of the first inning and needed a couple of minutes to recover. He left the game after the second inning, with Lance Barksdale moving from first base to behind the plate. ... Reds 2B Brandon Phillips missed his second game after being hit by a pitch from Pittsburgh's Tony Watson on Saturday. Manager Dusty Baker said Phillips' forearm is still very sore. Cesar Izturis started at second.
