Ospreys inched to a 10-0 win over Zebre in the Guinness PRO14 at a wet Liberty Stadium.
Ospreys head coach Toby Booth says his side will have to adapt to the Sportsground's notoriously inclement weather conditions if they are to compete with Connacht.
Cardiff Blues had to play with 14 men for 30 minutes as referee Ben Whitehouse hit them with three yellow cards in a 17-3 defeat to regional rivals the Ospreys.
The Ospreys overturned a 15-point deficit to record a 24-22 Guinness PRO14 victory over Benetton at St Helen’s in Swansea.
Forgotten star of the 2013 British and Irish Lions tour, Dan Lydiate, will lead Ospreys for the third time this season when they take on Leinster.
Follow all the action on the RugbyPass live blog from the Guinness PRO14 match between Scarlets and the Southern Kings at Parc y Scarlets.
Ospreys Rugby have confirmed that Hanno Dirksen has signed a new two-year deal with the Region, making him the 16th member of the senior squad to re-sign in 2019.