A try to flanker Sean Reidy was key to Ulster's 19-18 result over Thomas Waldrom's Exeter Chiefs. Jared Payne and Charlie Piutau also featured for Ulster.
A hat-trick to wing Stacey Ili helped Connacht to a 52-7 crushing of Zebre. Jake Heenan (7) and Bundee Aki (23) also turned out for Connacht.
Clermont beat Bordeaux-Begles 49-33, former Otago threequarter Jayden Spence featuring for the latter, while Luke Braid and Hugh Chalmers were in the loose trio.
A try and five goals to Tyler Bleyendaal highlighted Munster's 38-17 over Glasgow on an emotional day in which the crowd farewelled Anthony Foley, their coach died tragically early last week.
Dan Carter scored 12 points for Racing-Metro, including a try, but his club were beaten 27-17 by Leicester Tigers, for whom loose forward Brendon O'Connor scored a try.
A late conversion to Jimmy Gopperth, operating this time at fullback, helped Wasps to a 20-20 draw at Toulouse. Nathan Hughes scored a try for the English club, while prop Census Johnston scored for the French side.
In the European Challenge Cup, Jason Eaton, on the side of the scrum, scored a try for La Rochelle in their 51-24 win over Bayonne. Former Highlander and Hawke's Bay Magpie Ryan Tongia played at fullback for Bayonne, with Adam Whitelock at centre.
Dan Bowden's Bath beat neighbours Bristol 22-6, while William Whetton's Brive edged Worcester 25-24. Nick Crosswell's Dragons fell 38-18 to Russian club Enisei.
A yellow card to lock Jarrad Hoeata did not prevent Cardiff Blues winning 27-12 over Pau, for whom lock Daniel Ramsay scored a try.
Halfback Tane Takalua scored a try for Newcastle Falcons in their 50-7 beating of Grenoble, for whom Tino Nemani copped a yellow card.
Stade Francais, with Paul Williams and Zak Taulafo in the mix, blanked Timisoara Saracens 27-0. Jack Umaga and Stephen Shennan played for Timisoara.
No 8 Nasi Manu scored a vital try as his Edinburgh beat Nick Evans' Harlequins 36-35. Evans slotted three goals, while Mat Luamanu scored a try for Quins.
Treviso seemingly cannot wait for Marty Banks to hit town after falling 37-8 to a Gloucester side that featured John Afoa, Joe Latta and Motu Matu'u. Wing Michael Tagicakibau scored a try for Treviso.
Brendon Leonard and Ma'afu Fia's Ospreys beat Ti Paulo's Lyon 31-13.
The Top 14, Aviva Premiership and Guinness PRO12 all resume this weekend for two rounds before the November international window.