ARLINGTON -- Twins left-hander Ron Mahay's season could possibly be over after an MRI exam on Monday revealed a torn rotator cuff in his right shoulder.

Twins manager Ron Gardenhire said the team is still determining a course of action for Mahay. But while the injury is not to his pitching arm, it still may wind up sidelining Mahay for the rest of the year.

"Probably surgery eventually," Gardenhire said. "We just have to touch all the right bases, but he has a torn rotator cuff in his right shoulder from the fall."

Mahay suffered the injury in the sixth inning of Saturday's contest against the Angels. With a runner on third and two outs in the inning, Erick Aybar hit a squibbler into the infield. Mahay stumbled off the mound as he tried to go field the ball and fell awkwardly on his shoulder. He then tried to crawl toward the ball and felt something in his shoulder.

With Mahay's injury, the Twins are down to one left-hander in their bullpen, Glen Perkins. Mahay had been 1-1 with a 3.44 ERA in 34 inning. The club's primary left-handed specialist for the majority of this season was Jose Mijares, who is out at least three more weeks after undergoing surgery to repair a torn meniscus in his right knee. Mijares suffered the injury while covering first base in a 6-1 loss at Chicago on Aug. 11.

The Twins' hope has been that Mijares would be able to return four weeks after his surgery, which took place on Aug. 16. But the club has said that it will be up to Mijares as to when he'll be ready.

"You don't know until you get there and see how everything goes," Gardenhire said. "Only he is going to be able to dictate that. He has to do the work. If everything goes good, probably a month, but it could be before and after. Just depends on Mijares and how much he does."

The Twins have been scouring the waiver wire looking for left-handed relief help, but there is no guarantee that they will be able to find a fit there. The team also doesn't appear to have much left-handed help ready in its Minor League system; in particular there aren't any options on the 40-man roster.

"It is what it is," Gardenhire said of having only one lefty. "We'll use right-handers to get them out, too. When Mijares went down, that's what we were doing, too. Choose your moments [with your lefty]."

Slowey suffers just mild strain of triceps

ARLINGTON -- The Twins received much better news in regards to Kevin Slowey on Monday, as an MRI exam revealed the right-hander only suffered a mild stain of his right triceps muscle.

Twins manager Ron Gardenhire said the MRI didn't show anything serious in regards to the strain in the triceps.

"We'll give him a couple weeks on the DL and go from there," Gardenhire said. "He should be fine."

Slowey was taken out of his start on Saturday after throwing just three innings, saying he felt a tug in his right arm on the last batter he faced. He was placed on the 15-day disabled list following Saturday's contest, and would be eligible to return from the DL on Sept. 6.

Twins unveil 2011 season ticket prices

ARLINGTON -- The Twins released their 2011 season ticket prices on Monday.

A total of 59 percent of tickets will experience between a $1-$2 increase in price per game next season, according to the prices released by the Twins. All main level tickets will see an increase between $2-$3 per game.

Two sections -- the U.S. Bank Home Run Porch View and the Grandstand -- will actually see a $1 decrease per game, and the U.S. Bank Home Run Porch Terrace price will remain the same. All three of those sections are located in the outfield mezzanine level at Target Field.

"While we're in the midst of an incredibly successful season, both in terms of team performance and ticket sales, the Twins remain committed to providing the region's most affordable family entertainment as we enter our second season at Target Field," said Twins president Dave St. Peter in a statement.

More information on exact ticket prices in each section can be found on www.twinsbaseball.com.

Worth noting

The temperature was between 100 and 110 degrees for most of the afternoon in Texas, but the Twins still took batting practice on the field before Monday's series opener. Twins manager Ron Gardenhire said the plan was to have the starters come off the field after they hit to stay out of the heat. ... Orlando Hudson's triple in the fifth inning on Sunday night was the 30th of the season for the Twins. It's the most triples by any American League team this season ... The Twins entered Monday with a 17-6 record against the American League West this year.