Athletics' Billy Burns leaves game with 'testicular contusion' (VIDEO)

Oakland Athletics outfielder Billy Burns left Friday's game against the San Francisco Giants with what was officially called a testicular contusion.

That's a black-and-blue nut to all us laymen.

Leading off the fifth inning, Burns went down quickly after the Jake Peavy pitch below bounced off of the ground and hit him in the groin.

Billy Burns left tonight's game with a "testicular contusion" https://t.co/tELvEBkVAu

— Justin Symons (@j_symons) July 25, 2015

Ouch. That hurts.

Foul tip nails A's Billy Burns in a very bad spot http://t.co/EYUdylvvQr pic.twitter.com/GSHSPFwpB3

— Sporting News MLB (@SN_Baseball) July 25, 2015

Despite the obvious pain, Burns managed to finish his at-bat before getting replaced by Mark Canha in the fourth inning.

Get the ice bag.

A's prospect Billy Burns scores on a sac fly ... from second base (VIDEO)

Billy Burns' name matches his style of play on the basepaths.

The minor league outfielder stole 74 bases in 81 attempts while splitting time between Nationals' Class-A and Double-A affiliates last season. And Burns — who was traded to the A's at the end of 2013 — seems to be blazing a trail to the big leagues.

The 24-year-old prospect — playing for the Midland Rockhounds —already has people comparing the speedster to Ricky Henderson and with good reason.

On Tuesday, Burns managed to score a run on a sacrifice fly — after tagging up from second base!

That's Henderson territory right there. Just don't pull a hammy.