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07/25/12 2:56 PM ET

Unless Plouffe shows improvement, will land on DL

CHICAGO -- Trevor Plouffe, who hasn't played since being removed from Friday's game against the Royals after bruising his right thumb, will likely land on the disabled list if he's unable to swing a bat on Thursday.

"If he can't go in and take swings [Thursday], then he'll go on the DL probably and we'll bring a player up for Friday," said manager Ron Gardenhire. "We said we'd give him one more day. He's available to do very little off the bench right now."

Gardenhire and general manager Terry Ryan said Danny Valencia is a possibility to be called up.

Valencia is hitting .249 with seven home runs and 36 RBIs in 66 games at Triple-A Rochester, striking out 40 times and walking 14. He's progressed in his last five games, hitting .333 with three doubles.

Ryan said if the Twins are forced to make a move for a third baseman, Valencia would still be the likely replacement.

"If you've got a third baseman that goes down, obviously Danny would be the ideal choice to come back up," Ryan said.

Gardenhire offers up instant replay proposal

CHICAGO -- Manager Ron Gardenhire's ideal plan for an instant replay in baseball would be having a red flag he can throw to challenge a call, prompting a supervisor already stationed in a booth watching the replay to indicate whether or not the call should stand.

"They have an umpire's supervisor at every ballgame," Gardenhire said. "Why can't he be watching the game and have a monitor there and have the replay they want to have?"

Gardenhire said he doesn't want the game to be stopped every five seconds for replay, and he doesn't want football stoppages where the umpires have to run off the field to view the play.

"I would love to have a red flag," Gardenhire said. "It would save me a [lot] of money if they can figure out a way to have a guy in the booth up there, and if you got it right, he turns on a light."

A few close calls occurred in Tuesday's 11-4 loss to the White Sox. One of the plays came on a diving catch in right field by Darin Mastroianni that was originally ruled a single before the umpires conferred and decided he caught the ball.

While Gardenhire's in favor of getting a certain amount of challenges per game, he admitted in the case of a play like Mastroianni's, sometimes replays will be inconclusive. In Gardenhire's scenario, the supervisor in charge would indicate whether the call was right or wrong with a green or red sign or flag.

"That sounds too simple," Gardenhire said. "There's probably got to be a little more than that. If it's, 'I don't know,' then a yellow flag. I just think they can do a lot with replay, if you really want to use it. But you can't do it with balls and strikes."

Worth noting

• Manager Ron Gardenhire said Ryan Doumit puts a lot of effort into any position he's playing and has a strong enough arm to play the outfield. Doumit, who started in left field Wednesday, gives Josh Willingham more time to rest.

"He's played more right field than left field, obviously, but I'll put him out there today," Gardenhire said. "I like to get Willy as many days as we can DH'ing the second half. He's played a lot of baseball."

Willingham has 25 home runs entering Wednesday and is four home runs from tying his career high in a season of 29, which he hit last year.

Rowan Kavner is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.