MINNEAPOLIS -- It remains unclear how much time Indians center fielder Grady Sizemore will miss due to his latest right knee injury.

On Tuesday, Sizemore underwent an MRI exam in Cleveland to evaluate the extent of the injury that sent him to the 15-day disabled list one day earlier. Indians manager Manny Acta said the results did not initially reveal any signs of serious damage.

"There's not much I can say," Acta said, "other than he had the MRI, and it doesn't appear to be anything as serious as we might've feared. ... For now, there's no timetable. Hopefully, we can have him as soon as possible."

Acta indicated that Indians head athletic trainer Lonnie Soloff, who is currently in Cleveland with Sizemore, would be able to provide a more detailed update later this week.

Sizemore injured his knee -- not the surgically-repaired left knee that plagued him last season -- while rounding first base in the first inning of Sunday's 8-3 loss to the Orioles. Cleveland described the center fielder's ailment as a bone bruise, which is the same injury that sidelined him for two weeks earlier this season.

For the time being, rookie outfielder Ezequiel Carrera is filling in as the Indians' regular center fielder. It is a chance for Carrera to show Cleveland if he can continue the success he was having with Triple-A Columbus.

In 81 games for the Clippers, Carrera hit .288 with two home runs, eight doubles, three triples, 25 RBIs, 35 stolen bases and 63 runs scored. He posted a .373 on-base percentage and collected 94 hits.

"I feel bad about what happened to Sizemore," Carrera said. "He's a good guy. For me, I wanted the opportunity to play center field. I want the confidence of the manager and the team. I want to do my job, and make the team happy with how I play."

Carmona's deliberate pace pays off

MINNEAPOLIS -- Manager Manny Acta was concerned that Indians starter Fausto Carmona was taking a little too much time between pitches on Monday night, but decided it was best not to intervene.

After all, Carmona's deliberate pace -- while worrisome on an extremely hot and humid evening -- was getting solid results against the Twins.

"Yeah, he was kind of slow," Acta said. "He has some type of routine going. It just didn't look or feel very good on a day like [Monday]. I talked to [pitching coach Tim] Belcher about it and he said, 'Hey, it's working, so let's leave it alone. Whatever works.'"

Making his first start off the 15-day disabled list, following a bout with a strained right quadriceps, Carmona held Minnesota to two runs over six innings in guiding the Tribe to a 6-3 win at Target Field. With the victory -- only his second in a 12-start span -- Carmona improved to 5-10 with a 5.63 ERA.

Acta said Carmona's slow styling is more about keeping his composure in the moment just before he unleashes a pitch.

"It does help him," Acta said. "What we want to make sure, is that he doesn't rush when he has the ball and is going to throw it. It's not so much in between pitches, but being able to hold the ball longer and just staying under control, instead of going forward too quick and flying open, and all that kind of stuff."

Quote to note

"It's very easy to say, 'Go grab such and such, and go grab such and such.' But they have owners, too. They belong to somebody. It's not like you go in a grocery-store aisle and grab something." Indians manager Manny Acta, on trading for players

Smoke signals

• The Indians announced on Tuesday that Double-A Akron first baseman Beau Mills was named the organization's Minor League Player of the Week for the period of July 10-16. During that span, the 24-year-old Mills hit .588 (10-for-17) with two home runs, three doubles, five runs scored and seven RBIs. Mills was also named the Eastern League Player of the Week.

• Indians left fielder Michael Brantley was a late scratch from Tuesday's starting lineup against the Twins. Cleveland announced that Brantley was out with an upset stomach. Entering Tuesday, he was hitting .412 over his past 11 games. With Brantley out, Ezequiel Carrera started in center and led off, and Travis Buck got the nod in left and batted ninth.

• Indians right-hander Mitch Talbot (15-day disabled list with a back issue) is currently working as a reliever in a rehab stint with Triple-A Columbus. Tribe manager Manny Acta said the ballclub wants to determine if Talbot can be a realistic bullpen option for the big league team. As a starter this season, the righty has gone 2-6 with a 6.33 ERA in 11 outings for Cleveland.