1994 BellSouth champion John Daly pulled out because of lingering effects of the flu which he battled at last week's Shell Houston Open. Daly's agent said his client was 'worn out'.
The 1996 British Open champion, Tom Lehman, also dropped out along with veteran player Greg Kraft. Neither gave specific reasons.
The trio will be replaced by Eduardo Herrera, Boo Weekley and Stephen Gangluff.