At UFC St. Louis on May 11th, welterweight contender Joaquin Buckley will face Nursulton Ruziboev in the co-main event. Buckley, who has won his last three UFC fights and is ranked 13th by MMA Fighting, originally requested to headline the card in his hometown. Ruziboev, who has won both of his UFC fights since moving up from middleweight, has accepted the challenge and will now face Buckley in a quick turnaround.