A potential grappling-fest has been added to the UFC’s summer return to the Windy City.

Welterweights Ben Saunders (18-6-2 MMA, 6-3 UFC) and Kenny Robertson (15-3 MMA, 5-3 UFC) have been booked for a fight at UFC on FOX 16 in July. UFC officials announced the new matchup late Friday.

UFC on FOX 16 takes place July 25 at United Center in Chicago. The main card airs on FOX following prelims on FOX Sports 1 and UFC Fight Pass.

After a 10-fight run in Bellator MMA, Saunders returned to the UFC this past August and tapped out Chris Heatherly with a rare omoplata at UFC Fight Night 49, netting him a $50,000 “Performance of the Night” bonus. He then topped Joe Riggs by injury TKO in December at UFC on FOX 13. He was expected to return in March against Erick Silva, but was sidelined with an injury. Now the “TUF 6” product will try to make it three straight in Chicago.

Robertson, an Illinois native who will be fighting in his home state, has won three straight fights, and two of the three have come by first-round stoppage. After a majority decision loss to Sean Pierson nearly two years ago, he submitted Thiago Perpetuo in hostile territory in Brazil with a rear-naked choke. After a decision win over Ildemar Alcantara at UFC 175, Robertson knocked out Sultan Aliev at UFC on FOX 14 in January.

With the addition, the latest UFC on FOX 16 card includes:

Champ T.J. Dillashaw vs. Renan Barao – for bantamweight title Edson Barboza vs. Myles Jury Jessica Eye vs. Miesha Tate Erik Koch vs. Ramsey Nijem Danny Castillo vs. Rustam Khabilov Takanori Gomi vs. Joe Lauzon Zak Cummings vs. Antonio Braga Neto Daron Cruickshank vs. James Krause Tom Lawlor vs. Gian Villante Kenny Robertson vs. Ben Saunders

For more on UFC on FOX 16, check out the UFC Rumors section of the site.