Padraig Harrington will make his US Masters debut alongside former champion Craig Stadler and Shigeki Maruyama from Japan. They tee off at 3:05pm Irish time tomorrow. Darren Clarke has been grouped with Jim Furyk and Chris Perry - they'll go off just after 5.15pm.
Tiger Woods will play with Stewart Cink and the Australian amateur Aaron Baddeley. Also grouped together are Jack Nicklaus, Arnold Palmer and Gary Player who with 13 titles between them have won more than one in five of the 63 Masters tournaments played.