Trey Mancini, right, celebrates with Jose Altuve after hitting a two-run homer Wednesday against the Boston Red Sox in Houston. The Astros won, 6-1. David J. Phillip/Associated Press

HOUSTON — After a stressful week dealing with trade rumors, Jose Urquidy was relieved to remain with the Houston Astros as the deadline passed Tuesday.

With that worry off his mind, Urquidy turned in his best start of the season Wednesday to help the Astros to a 6-1 win over the Boston Red Sox.

“I’m more calm right now,” Urquidy said. “I was like, ‘What’s going to happen with me? Where am I going to be?’ And now I feel more comfortable and I’m very grateful to stay on this team.”

Urquidy (10-4) allowed two hits and tied a career high with 10 strikeouts in seven shutout innings.

Trey Mancini homered in his first start for Houston to back Urquidy’s sterling performance. Mancini, who was traded from Baltimore on Monday to bolster the offense with first baseman Yuli Gurriel struggling, grounded out as a pinch-hitter in his Astros debut Tuesday night.

Things went much better in his first at-bat Wednesday, when he knocked a pitch from Rich Hill (4-5) into the seats in left field for a two-run shot that made it 4-0 with no outs in the second inning.

“Wherever they want to put me, whatever my role is, I just want to help in whatever way I can,” Mancini said. “I’m all in. I know they’ve got a really good thing going and wherever I fit that certain day, I’m going to do my best to do the job and just help contribute to wins as best I can.”

Urquidy retired the first 13 batters before plunking Alex Verdugo with one out in the fifth. He sat down the next two batters in that inning before Reese McGuire got Boston’s first hit on a single to open the sixth.

Tommy Pham doubled with two outs in the inning, but Urquidy struck out Rafael Devers to end the threat.

“He was sharp, and especially sharp with his changeup and spotted his fastball very effectively and he had them off balance,” Astros Manager Dusty Baker said. “He was outstanding.”

Jose Altuve tied a career high with four hits to allow Houston to avoid a sweep after losing the first two games of the series. It was the 34th four-hit game of Altuve’s career, tying him with Craig Biggio for most in team history.

“Every time my name is mentioned next to Craig Biggio, I feel honored because I have a lot of respect for him,” Altuve said of the Hall of Famer.

Hill struggled in his return from the injured list, with the Astros jumping on him for six hits and four runs in three innings. He had been out since July 1 because of a sprained left knee.

“Just poor execution,” Hill said. “Poor execution on the breaking balls, poor execution on the fastballs. That’s what it came down to. I pitched like crap.”

Brayan Bello took over for Hill but got just two outs before leaving with a strained left groin.

The Astros took an early lead when Altuve scored on a groundout by Yordan Alvarez in the first. Houston made it 2-0 when Alex Bregman drove in a run with a sacrifice fly.

Kyle Tucker extended the lead to 6-0 with a two-run double in the fifth inning.

TRAINER’S ROOM

Astros: Right-hander Lance McCullers Jr., who has been out all season because of a strained right forearm, will make a fourth rehabilitation start for Triple-A Sugar Land on Sunday. McCullers allowed three hits and three runs – two earned – in 3 1/3 innings Tuesday night for Sugar Land.

NEW FACES

Christian Vázquez got his first start at catcher for the Astros after a trade from Boston on Monday. He didn’t fare well against his former team, going 0 for 4 with a strikeout, although he did navigate Urquidy through his gem.

Will Smith, traded from Atlanta on Tuesday, made his Houston debut in the ninth. He allowed a solo home run to Devers.