Should Trump score an upset, it will trigger what one observer called "the biggest political payout in bookmaking history."
Woods pulls out of the PGA Tour's season opener in California, citing concerns over his game.
A survey has shown voters' perception of Trump's brand declined after a tape of him making lewd comments toward women was released.
Tiger Woods will not participate in this week's Safeway Open, Golf Channel reported Monday.
U.S. stock futures were searching for direction, after Wall Street broke a two-session losing streak.