Bantamweights Michael McDonald and John Lineker have taken over the main event role for UFC Fight Night 91.
A planned headline fight pitting Tony Ferguson vs. Mike Chiesa was scrapped when Chiesa bowed out due to a back injury. Ferguson will remain on the card, taking on newcomer Landon Vannata.
McDonald (17-3) and Lineker (27-7) have a combined Octagon record of 14-4. They are both right on the edge of contention in the stacked bantamweight division.
Vannata (8-0) will try to spoil the run put together by Ferguson (20-3), who has gone 10-1 in his UFC career.
UFC Fight Night 91 takes place July 13 from the Denny Sanford Premier Center in Sioux Falls, South Dakota.