SAINTS face something of an unknown quantity tonight when newly-crowned Challenge Cup winners Leeds Rhinos come to town. (7.45pm)

Rhinos have picked a mixed squad, leaving out several members of the side that won at Wembley, but promoting several of the younger players that gave a full strength Warrington side a test the week before the final.

The game is significant - not merely for the points at stake - because it will take Saints past the 15-game threshold that all clubs must cross to have a chance of qualifying for the Super League play offs.

Saints are currently top of the pile, on 78.57%, with Wigan in second on 71.43%.

Leeds are battling to get back into the top four, as they are currently being shaded out by Catalans.

That will make Leeds, mixed side or not, a dangerous opponents tonight for Kristian Woolf's men.

Saints make just one change to the 21-man squad with James Graham coming back in after a 14-day self-isolation.

That gives Woolf a selection headache of sorts with his bench. Dom Peyroux has been coming on in the middle in Graham's absence.

If Graham starts at prop Matty Lees will drop down to the bench - or vice versa - leaving the coach with a choice of going with three more forwards in Peyroux, Kyle Amor and Louie McCarthy-Scarsbrook. Or more likely selecting two of those and either continuing Lewis Dodd's development off the bench or going with Aaron Smith to spell for James Roby.

Monday's game with Salford could influence his thinking on that score.

The rest of the team picks itself, Woolf's only other big conundrum being left centre where he has been looking at both Josh Simm and Jack Welsby.

If Welsby does not play centre, his versatility means he would also be an option for the 14 role.

Saints: 1 Lachlan Coote, 2, Tommy Makinson, 3. Kevin Naiqama, 5. Regan Grace, 6. Jonny Lomax, 7. Theo Fages, 8. Alex Walmsley, 9. James Roby, 11. Zeb Taia, 12, Dom Peyroux, 13. Louie McCarthy-Scarsbrook, 14. Morgan Knowles, 15. Matty Lees, 16. Kyle Amor, 19. Aaron Smith, 20. James Bentley, 22. Jack Welsby, 23, Joe Batchelor, 26, Josh Simm, 27, Lewis Dodd, 32. James Graham.

Leeds Rhinos: 1. Jack Walker, 6. Rob Lui, 8. Ava Seumanufagai, 14. Brad Dwyer, 16. Richie Myler, 19. Mikolaj Oledzki, 20. Bodene Thompson, 21. Rhys Evans, 22. Cameron Smith, 23. Callum McLelland, 24. Luke Briscoe, 25. James Donaldson, 26. Alex Sutcliffe, 27. Sam Walters, 28. Tom Holroyd, 33. Jarrod O’Connor, 34. Jack Broadbent, 36. Corey Hall, 38. Liam Tindall, 39. James Harrison, 42. Levi Edwards.