With a win over a former champion, Dustin Poirier is on the rise in theUSA TODAY Sports/MMAjunkie rankings.Poirier defeated former titleholder Anthony Pettis in UFC Fight Night 120’s headliner, which moved him from No. 13 to No. 11 at lightweight. Pettis, meanwhile, falls from No. 11 to No. 12.As for upcoming events, Saturday’s UFC Fight Night 121 headliner offers rankings honorable mention Marcin Tyburaa chance to jump in the top 15 in the heavyweight division when he takes on former titleholder and No. 3-ranked Fabricio Werdum. Check out all of the rankings above.