Munster know a win is a must away to Saracens in the European Champions Cup this afternoon.
Anthony Foley's men go into the game three points behind their opponents in pool 1 and four off leaders Clermont.
Kick off at Allianz Park is 1pm.
Ulster are away to reigning European champions Toulon in pool 3 at 3:15pm.
While Leinster host Castres at the RDS at 5:30pm this evening in pool 2.
Leinster start the day level on points with pool leaders Harlequins.
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