The best in the west go head-to-head on Saturday at Millbrae as Ayr take on Glasgow Hawks in the BT Premiership, kicking off at 3pm.
Just two points separate leaders Hawks and third-placed Ayr, and both teams will be giving it their all in search of a win.
"Hawks have played some outstanding rugby so far this season and will come to Millbrae full of confidence," says Ayr head coach Calum Forrester. "The players are looking forward to the challenge in what is set to be a cracking west coast derby."
In the squad, Archie Russell returns at centre to partner Stafford McDowall, whilst Ross Curle will be calling the shots at stand-off in place of the injured Frazier Climo.
Glasgow Warriors' Canadian international prop Djustice Sears-Duru makes his debut in a lively front row along with David Young and Steven Longwell, whilst George Hunter stays at blindside flanker.
Robert McAlpine returns from Pro12 duty with the Warriors to reform his formidable double act in the second row with Scott Sutherland.
There are possible 1st XV debuts from the bench for Inverness-born Ruaridh Mackenzie and Paddy Dewhirst, who scored 23 points and was man of the match for the 2nd XV in last week's 78-12 win against their Hamilton counterparts.
15. Grant Anderson (c); 14. Richard Dalgleish, 13. Archie Russell, 12. Stafford McDowall, 11. Craig Gossman; 10. Ross Curle, 9. David Armstrong; 1. Djustice Sears-Duru, 2. David Young, 3. Steven Longwell; 4. Robert McAlpine, 5. Scott Sutherland; 6. George Hunter, 7. Will Bordill, 8. Blair Macpherson.
16. Robbie Smith, 17. Craig Stevenson, 18. Ruaridh Mackenzie, 19. Paddy Dewhirst, 20. Jamie Bova.
15. Peter Murchie; 14. Junior Bulumakau, 13. Bobby Beattie, 12. Brendan McGroarty, 11. Kerr Gossman; 10. George Horne, 9. Grayson Hart; 1. Steven Findlay, 2. Scott Rodgers, 3. Gary Strain; 4. Andy Linton, 5. Andy Kirkland; 6. Andy Redmayne, 7. Grant Stewart, 8. Tommy Spinks (c).
16. Paul Cairncross, 17. Brendan Cullinane, 18. Sam Thomson, 19. Jack Steele, 20. Davie Milne.