HOUSTON -- The Baltimore Orioles parlayed two Houston errors and a strong start from right-hander Chris Tillman into a 4-1 victory, snapping the Astros' six-game winning streak Tuesday night at Minute Maid Park.
Tillman (5-2) produced his fourth start this season with fewer than two earned runs allowed, surrendering just one run on four hits and two walks with a career-high-tying eight strikeouts over seven innings and 113 pitches (73 strikes). He allowed consecutive batters to reach base only once, producing an outing bested only by the eight shutout innings he twirled in a 5-1 victory over the Los Angeles Angels on May 2.
The Orioles (33-25) recorded just two run-scoring hits. After Manny Machado scored on a fielding error in the third inning, Baltimore left fielder Nate McLouth followed a leadoff single to center field off left-handed reliever Wesley Wright in the eighth with a pair of stolen bases before strolling home on an errant throw from catcher Jason Castro.
The Astros (21-38) returned to Houston around 6 a.m. Tuesday following their first undefeated road trip of at least six games since a 7-0 tear through Montreal and Philadelphia from Sept. 3-9, 1999.
Lucas Harrell entered the game ranked last in the American League in walks with 37. He had allowed one earned run in six different starts this season, and in only one of those outings -- May 9 against the Los Angeles Angels -- did he issue three-plus walks.
From the onset, Harrell exhibited supreme control, with his lone patch of early trouble coming in the third inning. Orioles designated hitter Danny Valencia smacked an opposite-field, leadoff home run to right field, and Machado later scored on a two-out error by Houston first baseman Chris Carter.
Tillman pitched shutout ball until Clint Barnes hit a solo homer in the sixth.
NOTES: Orioles DH Wilson Betemit (right knee sprain) and 2B Brian Roberts (right hamstring strain) hit in the cage and participated in light agility drills. Betemit has been out all season; Roberts has been sidelined since April 5. ... Baltimore LHP Wei-Yin Chen started his throwing program, making 25 throws at 65 to 75 feet pain free. Chen has been sidelined since mid-May due to a right oblique strain. ... Astros CF Justin Maxwell began his rehab assignment with Double-A Corpus Christi. Maxwell was placed on the 15-day disabled list with a fractured left hand on April 24.