ANAHEIM, Calif. — Jered Weaver left Monday night’s Los Angeles Angels game after two innings with lower back tightness. There was no immediate word on the severity of the injury.

Weaver had retired all six Toronto Blue Jays hitters in the first two innings. He felt something during warmups for the third inning and came out of the game.

Matt Shoemaker, who threw 102 pitches in a start Thursday, relieved Weaver. Shoemaker is working on three days rest.

Shoemaker is scheduled to start Thursday, but presumably Hector Santiago will go into that slot now.

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Bronson Arroyo, who had never been on the disabled list before this season, will have Tommy John surgery within the next week or so, becoming the third Diamondbacks pitcher to undergo the ligament-replacement procedure this year. Signed by Arizona during the offseason, Arroyo had been one of baseball’s most durable pitchers, making 369 consecutive starts during 15 seasons with four teams.

• The Minnesota Twins say Target Field is the first major-league ballpark to serve beer from a vending machine.

The self-serve beer station debuted Sunday during the game against the New York Yankees. A second station is expected to be added in time for the All-Star Game next week.

To buy a brew from the vending machine, buyers prove their age at a concession stand and purchase a vending card. That card is used at the vending machine where buyers can tap up to 48 ounces every 15 minutes. The machine offers four beers and, just like the concession stands, stops dispensing beer by the seventh inning.

• Cleveland center fielder Michael Bourn could be sidelined for one month because of a strained left hamstring. The team said an MRI confirmed a “mild to moderate” sprain and Bourn will miss at least three weeks. Bourn has had issues with the hamstring all season. He was placed on the 15-day disabled list Sunday.

Cleveland manager Terry Francona said Bourn will be out “a little bit longer” than originally thought. The team hoped Bourn would return soon after the All-Star break, but the MRI results have changed that plan.

• The St. Louis Cardinals say an MRI exam on right-hander Michael Wacha’s injured shoulder showed progress, but not enough for him to resume throwing.

General manager John Mozeliak said Monday that Wacha, the National League Championship Series MVP last fall, will be evaluated again in two weeks.

• The Texas Rangers want struggling rookie outfielder Michael Choice to work on his game in the minor leagues.

The Rangers demoted Choice to Class AAA Round Rock with his average at .177 after just six hits in the past month.

“He needed to go get himself together,” manager Ron Washington said. “We have a lot of faith in him. It’s just that you don’t need the struggles to become mental.”