Wasps' Elliot Daly and Saracens duo Will Fraser and Joel Tomkins (pictured) were the players called up on Sunday night.
All three have been promoted following recent action for the Saxons.
Centre Daly will provide training cover for Ben Foden, who is on a post-match recovery programme after ankle trouble, while Fraser comes in as cover for Ben Morgan, as the number eight continues his rehabilitation from an ankle injury.
Tomkins is an injury replacement for centre Jonathan Joseph, who will remain with London Irish for treatment on a foot injury.
- Sports & Recreation
- Joel Tomkins
- Ben Foden