Duensing was diagnosed with a bruised left ankle, and X-rays were negative. He's day to day, and wasn't scheduled to start until after the All-Star break.
"It's really good news," Duensing said. "I was a little nervous at first because of the way it felt initially, but I was able to walk off and go up the stairs on my own and stuff like that. I was still kind of ginger with it, but I think I was more tentative than anything."
Duensing tried to step forward to field the ball but instead fell to the ground after being hit by the line drive, but catcher Joe Mauer was able to field the ball and throw to first base for the first out of the inning.
"I was actually trying to get out of the way," Duensing said. "And I got it pretty good. I think my shoe saved me -- got a lot of my shoe -- but still hit pretty hard."
He was able to limp off the field but appeared to be in pain as he left the game.
"The good thing's nothing's broke so we'll just go day by day with him," Twins manager Ron Gardenhire said. "He's got a little bit of time here anyway, which is a good thing. He'll probably need it."
Duensing was pitching well before the injury, as he gave up two runs on four hits over 4 1/3 innings, although Minnesota was trailing, 2-1, when he exited. Those two runs came in the first frame on a bloop two-run double from Prince Fielder.
Right-handed reliever Kyle Waldrop relieved Duensing and walked the first two batters he faced, but was able to get Ryan Raburn to ground into an inning-ending double play.