Move over Floyd Mayweather Jr.
What better way to catch the attention of Conor McGregor than by calling him out to fight, while dressed as a ninja turtle?
That's exactly what Ukrainian boxing star Vasyl Lomachenko did on Saturday.
Lomachenko, a two-time Olympic gold medallist - one at featherweight and one at lightweight - is a two-weight world champion since turning pro and seemingly has his sights set on a high-profile match-up.
UFC star McGregor has been preoccupied with repeated talk of a super-bout with the undefeated Mayweather, but the Irishman might have another opponent to contend with if he opts for a change from the octagon to the boxing ring.