Burnett has allowed just four hits and four walks over that stretch with seven strikeouts. He recorded four key outs in Monday's 6-4 win over the Tigers, striking out Brennan Boesch on three pitches to end the seventh with two runners on base before tossing a scoreless eighth.
"He's just taken off," Twins manager Ron Gardenhire said. "He's very confident right now. The ball's coming out of his hand really good -- all of his pitches. And he's got an exploding fastball, a nice little flip at the end that makes the ball jump."
Burnett, 24, has a 1.77 ERA with 18 strikeouts and 11 walks over 40 2/3 innings this season. It's been a big turnaround from last season, when he had a 5.51 ERA in 50 2/3 innings.