CINCINNATI -- Pittsburgh manager Clint Hurdle figured the odds were against Mat Latos extending his impressive streak without a defeat.
"He's due to lose," Hurdle said pregame.
With one good inning, the Pirates pulled it off.
Latos (6-1) hadn't lost a regular-season game since last August, setting a club-record streak of avoiding defeat. He couldn't overcome Pittsburgh's three-run first inning set up by his uncharacteristic control problems.
"I was aggravated with myself," Latos said. "I didn't throw too well in the bullpen and kind of took it into the first. I beat myself today. It's always hard when you put your team in a 3-0 hole."
Latos had nine of Cincinnati's 17 strikeouts, which matched the club's nine-inning record. The Reds also had 17 strikeouts on opening day, but that came in a 13-inning loss against the Los Angeles Angels.
Charlie Morton (1-1) was better during his second start since returning from elbow surgery. He gave up three singles and threw 61 pitches in 5 1/3 innings, starting the Pirates toward their NL-leading 12th shutout.
"Fortunately the few times they hit it really hard, they hit it at people," Morton said.
Cincinnati's lineup managed four hits while getting shut out for the second time in their last four games.
The Ohio River rivals have split the first two games of their four-game series, leaving the Reds a half-game ahead of the Pirates. They've been right behind the NL Central-leading Cardinals most of the season.
Hurdle encourages his staff to pitch inside, part of what he thinks pitchers need to do in order to control the strike zone. Pittsburgh has hit 39 batters, the most in the majors, but also leads in shutouts.
"When two teams are focused on winning and neither one wants to blink and they just want to play hard and compete, you push the envelope in a lot of different places," Hurdle said. "Not just at the plate trying to get balls in on people, but breaking up double plays and everything.
"So we've got to beat these guys and we've got to beat the Cardinals to get to where we want to go."
Latos yelled from the dugout after Choo got hit. Latos hit Walker in the first inning in Pittsburgh last Saturday, prompting plate umpire Bob Davidson to warn both teams.
"It's time somebody stepped up and did something about the team that's hit more guys in the league than anybody," Latos said. "I got fined for hitting Neil Walker, but you've got a team drilling guys over and over again. It's time for the league to step up and end it. That fired me up."
Latos hadn't lost since Aug. 24, when the Cardinals beat the Reds 8-5. In the last 21 starts, he'd gone 10-0 with a 2.80 ERA. The Reds were 17-4 during that streak. Also, Latos had never lost to the Pirates, going 4-0 in eight starts with a 2.29 ERA.
Finally, they caught him in a slow start.
He struggled with his control at the outset, needing 32 pitches to get through a 19-minute first inning. Starling Marte tripled and scored on Russell Martin's infield single, giving Pittsburgh a run after only four pitches. Latos walked Garrett Jones and Walker, and Alvarez singled for two more runs.
Latos settled down after the first, fanning eight of the next 11 batters. The problem was his pitch count, which was at 88 when he left for a pinch hitter with two runners aboard in the fifth inning. His streak was left in the hands of the bullpen and the offense.
They couldn't bail him out. Marte singled home another run in the seventh.
Morton had a lot to do with it, too.
The right-hander dominated the Reds in 2011, giving up only one run in two complete games at Great American Ball Park. He had his right elbow rebuilt last June 14 and returned to the majors last Thursday, allowing four runs and seven hits in five innings of a 10-0 loss to San Francisco.
The Pirates agreed to terms on Tuesday with C Reese McGuire, their first-round pick and the 14th overall selection in this month's draft. ... Pirates LHP Wandy Rodriguez, on the 15-day DL retroactive to June 6 with a tight left forearm, will throw all of his pitches in a bullpen session on Thursday. If he comes out of that without problem, he will make a rehab start in the minors on Sunday. ... Choo has been hit a career-high 19 times, most in the majors.
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