Jones knows the ground rules.

[Coach Dykhoff]

Baltimore Orioles center fielder Adam Jones (10) waits for an umpires ruling of a stuck ball under the pads of centerfield, giving Kansas City Royals' Mike Aviles a double and bringing Alcides Escobar back to third from scoring in the 8th inning during Wednesday's baseball game at Kauffman Stadium on May 4, 2011 in Kansas City, MO. John Sleezer/The Kansas City Star

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After a ball was hit in the gap by Aviles it became lodged underneath the padding in left center. Once seeing this Jones stopped and put up his hands. During this time the the runner that was on first and Aviles rounded the bases. It looked as if Aviles was going to get an inside the park homerun because Jones would not touch the ball and left his hands in the air. The Umpire ran out to left center and confirmed it a ground-rule double.

Jones made a heads up play on this by knowing the ground rules of the stadium. If he would have thrown up his hands and not have known the ground rules it would have tied up the game. O's go on to win the game 3-2.