Ospreys ended their Champions Cup campaign in disappointing style as they were beaten 23-20 by Treviso on Saturday.
Sky Sports once again brings you the best European rugby action with six live games this weekend.
Racing Metro hammered Treviso 53-7 on Sunday to move top of Pool 5 of European Rugby Champions Cup.
We consider all the possible outcomes ahead of Round 5 of the European Champions Cup.
Watch all the highlights of this weekend's Guinness PRO12 action.
Ulster survived a spirited fightback from Treviso to win 24-20 at Stadio Monigo on Sunday.
Ulster coach Neil Doak has made only two changes for his side's trip to Treviso on Sunday.
Treviso beat Zebre for the second time in as many weeks as they edged the return PRO12 Italian derby 17-15 on Saturday.
More of the games that matter on Sky Sports
Watch the action with a Day or Week Pass
For all the latest news, features and videos
We've a host of top class rugby union action
Listen to the latest rugby union news