MARK Percival is a surprise inclusion in Saints' 21 man squad for Saturday's World Club Challenge clash with the Sydney Roosters.

Percival suffered chest and shoulder injuries in the defeat at Warrington earlier this month and appeared to be ruled out for several months.

However, coach Kristian Woolf, who is due to speak at the pre-match press conference later, has named the centre in his initial 21-man squad.

Skipper James Roby returns after working his way back to fitness following off-season groin surgery, but is now fit and is included in the squad.

Regan Grace misses out after suffering concussion in the win over Hull FC last weekend and Lachlan Coote is also still out through injury.

2. Tommy Makinson, 3. Kevin Naiqama, 4, Mark Percival, 6. Jonny Lomax, 7. Theo Fages, 8. Alex Walmsley, 9, James Roby, 10. Luke Thompson, 11. Zeb Taia, 12. Dom Peyroux, 13. LMS, 14. Morgan Knowles, 15. Matty Lees, 16. Kyle Amor, 18. Joseph Paulo, 19. Aaron Smith, 20. James Bentley, 21, Matty Costello, 22. Jack Welsby, 27. Lewis Dodd, 30. Tom Nisbet.