White Sox ace Chris Sale is one of the most feared pitchers in all of baseball.
But off the mound, the two-time All-Star is known as a bit of a prankster.
Following Wednesday's victory over the San Francisco Giants, Sale rocked a hat with a mysterious telephone number during his postgame press conference.
"You'll see, just give it a call," Sale responded when a reporter asked him about the number.
The (816) area code on Sale's hat traces back to Kansas City.
Could Sale be pulling a prank on somebody in the Kansas City Royals organization?