It's 'Derby Day' tomorrow at Millbrae when Ayr welcome neighbours Marr in the Scottish Cup.The two sides have a well-documented past and always put on a showcase of local talent when they come to blows.

The Troon men are high-flying in this year's Tennent's Premiership and are currently the top team in Scottish Club rugby. Ayr, who have a youthful side, are resigned to National 1 due to the Super6 but remain undefeated in front of the Millbrae faithful.With a healthy contingent of Ayr youth system graduates playing in both pink and purple tomorrow, it promises to be a great exhibition of home-grown produce.Head Coach Stuart Fenwick is looking forward to the challenge: "Cup rugby is a great opportunity to benchmark ourselves against the in-form side at the minute. "Last weekend eighteen of our twenty players played youth rugby at Ayr and it will be similar numbers tomorrow. "There is no pressure on us. We have just got to go out there and make everything a contest".

The backline remains relatively untouched, with Harry Lynch the only change. The hard-running centre pushes James Baird to the wing, with Camie Black dropped to the bench.In the pack Scott Clelland moves to two, with Gregor Lynch coming on at loose-head. An injury to Mr. Consistent Euan Hamilton means he misses out, so Seth Rae moves from eight to the engine room.Morgan Leatherbarrow takes the number eight jersey with Kerr Borland coming in at six.Club Captain Gregor Henry returns from injury as a straight swap for Cameron Young.On the bench Declan Bryce returns and Olli Ranasen is in line for his 1st XV debut.The game kicks-off at 15.00 and you can follow the action every step of the way on Twitter @OfficialAyrRFC.