Hook and Boyet swapped penalties again as the Ospreys led 22-12 after 64 minutes.

BBC: Ospreys 22-15 Bourgoin

Bourgoin inched their way back through the boots of first Sebastien Laloo and then Benjamin Boyet.

BBC: Ospreys 22-15 Bourgoin

The Scot took Wallace's pass and skirted the attempted challenge of Boyet to go over in the left corner.

BBC: Bourgoin 24-17 Ulster

After the break, Benjamin Boyet kicked a 43rd-minute penalty for Bourgoin, which was cancelled out three minutes later by Hook's fourth penalty.

BBC: Ospreys 22-15 Bourgoin

But Boyet slotted his third penalty to confirm a bonus point for Bourgoin that the Ospreys could yet rue come the final tally-up at the pool stage.

BBC: Ospreys 22-15 Bourgoin