UFC on ESPN: Sandhagen vs. Font was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on August 5, 2023 at Bridgestone Arena in Nashville, Tennessee, United States. A bantamweight bout between former interim UFC Bantamweight Championship challenger Cory Sandhagen and Umar Nurmagomedov was expected to headline the event. However, Nurmagomedov withdrew from the event in mid-July due to a shoulder injury. He was replaced by Rob Font in a catchweight bout of 140 pounds.