Duffy's follow-through from the pitch pulled him toward the third-base side of the mound, so he actually did a 180, then began chasing the ball.
As Duffy reached the ball, he had no time to pick it up and transition it to his bare hand. So Duffy instinctively just flicked the ball from his glove to first baseman Eric Hosmer, nipping Inciarte by inches for the out.
Hosmer immediately gazed at the scoreboard for a replay, perhaps amazed by Duffy's play himself, or wanting to make sure the Royals got the out -- they did, as the Braves did not challenge.
Jeffrey Flanagan has covered the Royals since 1991, and for MLB.com since 2015. Follow him on Twitter @FlannyMLB. This story was not subject to the approval of Major League Baseball or its clubs.