The Derby Boy is a character who appears in A Link Between Worlds. He runs the Octoball Derby, a mini-game that takes place in Lorule. Besides Rupee prizes, the Derby Boy will reward Link with a Piece of Heart when he is able to score at least 100 points in this mini-game for the first time.
"Attaboy, batta boy! Yer on deck. Here we go! 30 pitches comin' at ya!"
— Derby Boy