Hull FC picked up their fifth win in six outings as they overcame Leeds Rhinos 19-18.
Marc Sneyd kicked a drop-goal eight minutes from time to clinch the points after the Rhinos had fought from 14-0 down to take the lead.
Two Jake Connor tries and another from Bureta Faraimo had given Lee Radford’s side lead before the Rhinos hit back Ryan Hall, Joel Moon and Matt Parcell.
But Tuimavave brought Hull FC level, and Sneyd kicked a field goal to secure the win.
Hull FC: Shaul; Faraimo, Connor, Griffin, Talanoa; Kelly, Sneyd; Taylor, Houghton, Bowden, Minichiello, Manu, Hadley Subs: Tuimavave, Paea, Lane, Matongo
Leeds: Golding; Briscoe, Watkins, Handley Hall; Moon, Myler; Delaney, Parcell, Cuthbertson, Ablett, Jones-Buchanan, Ward. Subs: Mullally, Ferres, Smith, Oledzki.