New provisions on returning athletes among changes to UFC anti-doping policy

LAS VEGAS — A retired athlete will now have an increased barrier of entry back into the UFC, but those returning after being released will gain some leniency.
A fighter who has retired or left the UFC under his or her own accord will not be able to compete again for the promotion until he or she is entered into the USADA drug-testing pool for six months, per changes to the UFC anti-doping policy made available to MMA Fighting on Thursday. Previously, the rule had been a four-month period i