Bryant, 30, suffered the injury at the end of his first practice with New Orleans on Thursday, just one day after signing a one-year deal with the team. Recovery is expected to take eight months for the three-time Pro Bowler, according to Schefter.
The MRI was seen as a "formality," in the first place. Doctors were fairly confident that Bryant's Achilles was torn as soon as the injury occurred.
Bryant has yet to play this season after a long free agency followed his April release from the Dallas Cowboys. He remained unsigned at the start of the season before joining the Saints last week.
The All-Pro receiver tweeted Friday evening that his injury was "the ultimate test."
Things was just starting to heat up for me... I won’t question the man upstairs... this is the ultimate test.. thank you everyone for the prayers
— Dez Bryant (@DezBryant) November 9, 2018