SEATTLE – Julius Walker thought the odds for his UFC debut would be a lot more lopsided. Walker (6-0 MMA, 0-0 UFC) draws ranked light heavyweight Alonzo Menifield  (15-5-1 MMA, 8-5-1 UFC) right off the bat in Saturday’s UFC Fight Night 252 ( ESPN+ ) main card opener at Climate Pledge Arena in Seattle. According to DraftKings, Walker is a +200 underdog against Menifield, who’s a -245 favorite. Considering the level of competition Menifield has fought, Walker is pleasantly surprised. “Honestly, to be completely real with you, the fact that I’ve been a pro for less than two years, and I’ve got six fights, and I’m fighting the No. 15-ranked guy in the world, and I think I’m like +170 or something,” Walker told reporters at Wednesday’s media day.