The Ospreys welcome fellow Conference A side Ulster to the Liberty Stadium on Saturday evening for round 11 of the Guinness PRO14, K.O 5:15pm.
The two sides have met 32 times, with Ulster winning on 18 occasions and Ospreys 14.
Referee: Marius Mitrea (FIR)
Assistant Referees: Nigel Owens (WRU), Manuel Bottino (FIR)
TMO: Alan Falzone (FIR)
Citing Commissioner: Paul Thomas (WRU)