Players who defected to Saudi-funded LIV Golf filed an antitrust lawsuit against the PGA Tour, the first step in a legal fight that could define the rules of where players can compete.
News of his absence comes after the golfer publicly apologized for controversial comments he made about Saudi Arabia and a new Saudi-backed golf league.
The six-time major winner said he "used words I sincerely regret" in an interview about a Saudi-financed golf league in which he brushed aside human rights violations by the Saudi regime.
U.S. officials say the former chairman of Dean Foods passed inside information to famed gambler Billy Walters, who then tipped off Mickelson. The SEC wants Mickelson to turn over $931,000.