Mirco Bergamasco kicked Zebre to a 23-17 win over the Newport-Gwent Dragons in their Guinness PRO12 clash on Sunday.
Connacht boosted their hopes of finishing in the top half of the Guinness PRO12 with a 53-5 bonus-point win over Treviso.
Cardiff Blues showed improved form to claim a welcome 21-15 win over Edinburgh in their Guinness PRO12 clash at Arms Park.
Munster moved top of the Guinness PRO12 after cruising to a 22-10 win over heavily-depleted Glasgow.
A late Jimmy Gopperth penalty sealed a 9-9 draw for Leinster in their PRO12 clash against Ospreys at the Liberty Stadium.
Ulster beat Scarlets 25-20 to move level with Glasgow at the top of the Guinness PRO12 table.
The Dragons have made three changes to their team as they head to Stadio Lanfranchi to take on Zebre on Sunday evening.
Pat Lam has made two changes to his Connacht side that faces Benetton Treviso at the Sportsground on Sunday.
Filo Paulo will play his 50th game for Cardiff Blues as they face Edinburgh in the Guinness PRO12 on Sunday.
Team news for Saturday's clash between Munster and Guinness PRO12 leaders Glasgow Warriors at Irish Independent Park.