Calum Clark played 40 minutes on his return from injury as the Wanderers were beaten at Newcastle on Monday evening.
The flanker had not played since suffering a shoulder problem in a pre-season win at Wasps last October.
But he came through a half for the Wanderers at Kingston Park, where the Saints second string lost 38-21 in their Aviva A League opener.
Argentine centre Juan Pablo Estelles scored the away team’s third try, with Rory Hutchinson and Howard Packman also registering.
The Wanderers’ next A League game comes at Worcester next Monday.