A reported lightweight bout for UFC on FOX 20 is now official for the July 23 fight card in Chicago as Edson Barboza will meet former Strikeforce champion Gilbert Melendez.

The fight booking was made official by the UFC on Wednesday.

UFC on FOX 20 will come from the United Center in Chicago, Illinois on July 23 and ticket information is expected to be announced shortly by the UFC.

Barboza (17-4) is coming off a decision win against former UFC champion Anthony Pettis at UFC 197 and has alternated wins and losses in his last five fights. He is 11-4 in the UFC and his last three wins have come by decision. Melendez (22-5) has dropped back to back fights and three of his four fights in the UFC. This will be his first fight since coming off suspension due to a failed drug test last year.

The current UFC on FOX 20 fight card is below.

Edson Barboza (17-4) vs. Gilbert Melendez (22-5)
Ryan LaFlare (12-1) vs. Alexander Yakovlev (23-6-1)
Hector Urbina (25-9) vs. George Sullivan (17-5)
Alex Oliveira (13-3-1) vs. James Moontasri (9-3)
Luis Henrique (8-2) vs. Dmitry Smolyakov (8-0)
Felice Herrig (10-6) vs. Kailin Curran (4-2)
Eddie Wineland (21-11-1) vs. Frankie Saenz (11-3)