Wells wrote Saturday morning on Instagram that he did not test positive for COVID-19, but one of his cornermen did, and because of contact tracing the bout was pulled. The card in Las Vegas will go on with 13 fights.
Wells (9-2-1) is coming off an impressive, second-round TKO of Warlley Alves in his UFC debut in June. The 35-year-old Philadelphia native is a former CFFC welterweight champion. Matthews (17-5), a 27-year-old Aussie, had a three-fight winning streak snapped in his last fight, a loss to Sean Brady at UFC 259 in March.