Jason White’s key men

JONNY GRAY Caps: 47 Position: lock/back row Six Nations: 4 A wise head on young shoulders. Will be vital to break down the defensive walls of Irish and English packs STUART HOGG Caps: 65 Position: Full-back Six Nations: 7 Scotland’s key man. Can create a try from anywhere and will cause defences problems from both hand and foot STUART McINALLY Caps: 66 Position: Hooker Six Nations: 2 Townsend’s most prized possession at present. Shortage of hookers means McInally must stay in his current fine form for at least the first two weeks GREIG LAIDLAW Caps: 66 Position: Scrum-half Six Nations: 6 The linchpin to Scottish success. Veteran Clermont star brings a wealth of experience but must make the right decision under pressure at the critical moments