Wales captain Sam Warburton came through unscathed after playing for an hour in Cardiff Blues' 27-20 Pro12 defeat by Glasgow.
Warburton and Wales team-mate Gethin Jenkins started for the Blues after being released for regional duty.
Prop Jenkins was replaced by Sam Hobbs after 54 minutes of the game while Rory Watts-Jones replaced flanker Warburton.
The pair were among 10 national squad members released for regional duty by Wales head coach Warren Gatland.
Scrum-half Mike Phillips came on for Racing Metro against Bayonne, the club that sacked him in October, in the French Top 14.
He joined Ireland's Jonny Sexton at half-back in last quarter and was on the winning side on Saturday as the Parisians were victorious 18-8.
James Hook, an unused replacement as Wales lost 26-3 to Ireland, scored 14 points with the boot from full-back in Perpignan's 50-19 defeat at Montpellier.
Jenkins' Wales understudy Paul James was also in action, playing the full 80 minutes in Bath's 27-23 Aviva Premiership win at Exeter.