The full UFC on FOX 31 weigh-in results included:
MAIN CARD (FOX, 8 p.m. ET)
Kevin Lee (156) vs. Al Iaquinta (156) Edson Barboza (156) vs. Dan Hooker (156) Rob Font (136) vs. Sergio Pettis (135) Jim Miller (155) vs. Charles Oliveira (152)
PRELIMINARY CARD (FS1, 5 p.m. ET)
Dwight Grant (169) vs. Zak Ottow (171) Jessica-Rose Clark () vs. Andrea Lee ()* Bobby Green (155) vs. Drakkar Klose (156) Jared Gordon (156) vs. Joaquim Silva (155) Jack Hermansson (185) vs. Gerald Meerschaert (186) Jordan Griffin (146) vs. Dan Ige (146)
PRELIMINARY CARD (FS1, 3:30 p.m. ET)
Adam Milstead (204) vs. Mike Rodriguez (203.5) Zak Cummings (185) vs. Trevor Smith (186) Juan Adams (266) vs. Chris De La Rocha (253)