McKinnon's first 49ers TD was his first score since 2017

49ers' Jerick McKinnon

Jerick McKinnon pulled a Michael Jordan on Sunday. McKinnon used Twitter instead of a fax machine and made the declaration: I'm back.

With 8:38 remaining Sunday in the 49ers' season opener against the Arizona Cardinals, the running back proved that to be true. As the 49ers trailed 17-13, quarterback Jimmy Garoppolo found McKinnon in the flat and he walked in for a five-yard touchdown. 

McKinnon gave the 49ers a 19-17 lead. A Robbie Gould extra point made it 20-17, but the Cardinals scored a TD on their ensuing drive to win 24-20.

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The touchdown was monumental for McKinnon, too. It was his first TD with the 49ers in his third season as a member of the organization, and his first time in the end zone since Dec. 3, 2017. McKinnon missed the previous two seasons due to a torn ACL and complications stemming from surgery.

Sunday was McKinnon's first time suiting up in the regular season for the 49ers. The touchdown was his third reception on the day and gave him 20 receiving yards. McKinnon also had three carries for 24 yards.