"There's nothing different," said Duncan, who is hitting .351 in his last 11 games, with four home runs and nine RBIs.
In that stretch, he has raised his overall average to .271, the highest it has been since May 3. With injuries to outfielders Shin-Soo Choo and Michael Brantley, Duncan has earned increased playing time. He admits that might play a factor in his recent surge, though he said that is far from rocket science.
"That always helps everybody," he said. "I'm more comfortable."
Duncan has hit six of his 10 home runs this month, tied for third-most in the American League. In 66 games this season, he is batting .271, with 38 RBIs.