Mark Wilson withdrew from The American Express after testing positive for COVID-19 prior to Thursday's opening round.
First alternate Matt Every replaced Wilson in the field at the PGA West TPC Stadium Course in La Quinta, Calif.
Wilson, 46, has five wins on the PGA Tour. His most recent victory came at the 2012 Humana Challenge, one of the former names of this week's The American Express tournament.
Wilson will have the PGA Tour's full support throughout his self-isolation period under CDC guidelines, according to a tour release.
--Field Level Media