Padraig Harrington has a 3.20pm start in his Accenture World Matchplay quarter-final against world number one Tiger Woods.
Harrington has already seen off Toshi Izawa, Bob Estes and David Toms in the Carlsbad, California tournament.
Darren Clarke takes on Jerry Kelly at 3.40pm, having already dispatched Eduardo Romero, Alex Cejka and Kenny Perry.