Ultimate Fighter 17 winner Kelvin Gastelum is officially moving up to middleweight after failing to make welterweight in his last fight and will meet Nate Marquardt at UFC 188.
The fight booking was announced by the UFC on Tuesday.
UFC 188 will come from the Mexico City Arena on June 13 and will be headlined by a heavyweight title unification bout as Cain Velasquez meets Fabricio Werdum.
Gastelum (10-1) missed weight for two of his last three fights and is coming off a decision defeat to Tyron Woodley at UFC 183 in January. He is 5-1 in the UFC and two of those wins have come by submission in the first round.
Marquardt (33-14-2) returned to the middleweight division last year and has gone 1-1 since returning to the 185 pound division. After defeating James Te Huna in his return to the division at UFC Fight Night 43, he was defeated by Brad Tavares by decision in January at UFC 182.
The current UFC 188: Velasquez vs. Werdum fight card is below.
Cain Velasquez (13-1) vs. Fabricio Werdum (19-5-1)
Gilbert Melendez (22-4) vs. Eddie Alvarez (25-4)
Tecia Torres (5-0) vs. Angela Hill (2-0)
Augusto Montano (15-1) vs. Cathal Pendred (16-2-1)
Yair Rodriguez (4-1) vs. Charles Rosa (10-1)
Kelvin Gastelum (10-1) vs. Nate Marquardt (33-14-2)