Roman Reigns is back ... the Universal champion is officially free of COVID and is returning to Smackdown Friday night -- where he's expected to confront the newly crowned WWE champion Brock Lesnar -- TMZ Sports has learned.
Of course, Reigns and Lesnar were supposed to clash at WWE's 'Day 1' pay-per-view on New Year's Day in Atlanta ... but that didn't happen after Reigns tested positive for COVID-19, forcing the company to go in a different direction.
Lesnar ended up winning the title that night in a Fatal 5-way match .