Lyoto Machida vs. Luke Rockhold headlines UFC on FOX 15

A middleweight bout between two top-contenders, Lyoto Machida and Luke Rockhold, is set for the main event at UFC on FOX 15 in Newark, New Jersey.

Rockhold announced the bout on his Instagram account on Thursday morning.

Machida (22-5) is coming off a very quick TKO victory over C.B. Dolloway in the main event at UFC Fight Night 58 in December. Since making the move to middleweight, Machida has gone 3-1, with his lone loss to champion Chris Weidman.

Rockhold (13-2) was knocked out in his debut with the UFC by Vitor Belfort. However, since that defeat, the former Strikeforce champion has gone on a three-fight winning streak, with stoppage victories over Costas Philippou, Tim Boetsch and Michael Bisping.

Machida is sitting at #3 on the UFC.com rankings, with Rockhold a couple spots back at #5.

UFC on FOX 15 goes down on April 18 from Prudential Center in Newark, New Jersey.