Jonny May returns to kick-start Gloucester's European campaign
England wing Jonny May made a tryscoring comeback to help Gloucester open their European Challenge Cup campaign with a 47-27 away win over Bayonne.
May, who had been sidelined with a knee injury since last December, was involved throughout and got over the line 12 minutes into second half to strengthen the Cherry and Whites' grip on the game.
Gloucester had made a perfect start with two tries from Mark Atkinson and another from Matthew Scott giving them a 21-6 lead inside the first quarter and the bonus point was secured just before half-time when Billy Twelvetrees went over for their fourth try.
Leading 32-27, May put more daylight between the sides and Tom Savage made sure with a late try, with James Hook taking his goal tally to seven.
Worcester went down 19-12 to Russian side Enisei-STM in Moscow despite scoring two tries to one.
The home side led 10-0 thanks an early try from David Kacharava and the first of three crucial penalties from the boot of Yury Kushnarev.
Full-back Josh Adams, one of several youngsters in the Warriors' line-up, kept his side in contention with an 11th-minute try, converted by Jamie Shillcock, and they trailed only 10-7 at the break.
Kushnarev kicked the home side into a nine-point lead but a try from replacement Derrick Appiah pulled the score back to 16-12 before the Russians clinched victory with a drop goal from Ramil Gaisin three minutes from the end.
Olympic Gold medallist Viliame Mata scored two tries on his debut for Edinburgh in their 59-17 win over Romanian club Timisoara Saracens.
Nasi Manu and Stuart McInally both scored hat-tricks and Michael Allen got Edinburgh's other try while Jason Tovey kicked seven goals.
Stephen Shennan scored two tries for the home side, who trailed 45-10 at half-time.
In the other afternoon match, Treviso lost 41-10 at home to in-form French Top 14 side La Rochelle.
Bath opened their campaign with a 25-22 victory over Top 14 side Pau in France.
Fly-half Rhys Priestland scored 20 points after kicking six penalties and converting Semesa Rokoduguni's try midway through the first half.
Pau touched down three times, through full-back Romain Buros, openside Sean Dougall and centre Watisoni Votu, with Brandon Fajardo kicking two conversions and a penalty.