Hooker Scott Otten crossed for two tries as Ospreys celebrated only their second Guinness Pro14 victory of the season as they edged out Ulster 26-24 at a rain-swept Liberty Stadium.

Dan McFarland has made three changes as Ulster bid to get back to winning ways away to Edinburgh.

Ulster may have achieved their goal in leapfrogging Benetton in the chase for a Guinness PRO14 knock-out place, but there was mixed news in the aftermath of Saturday’s win over Southern Kings for coach Dan McFarland ahead of next week’s Champions Cup quarter-final with Leinster.

Marcell Coetzee marked his comeback for Ulster with one of their five tries in a 33-19 Guinness PRO14 win over the Southern Kings.

Ulster moved third in PRO14 Conference B following a 28-15 bonus-point victory over bottom side Dragons in Newport.