From ESPN:

Ohio State got an endorsement Wednesday from an odd source on social media. Former Michigan quarterback Tom Brady's video appeared on Brutus Buckeye's Twitter account exclaiming "Let's go Bucs" at the end.

The caption to the video read, "A quick PSA from an old friend." The original video, of course, was Brady telling Buccaneers fans to stay safe and the "Let's go Bucs" portion was meant for his NFL team, not his former rival.

With so much attention on Brady right now, and capitalizing on the nickname of his new team, Ohio State's mascot pounced on the opportunity to take a fun jab at Brady.

While he has not responded to the tweet, knowing this rivalry, it seems likely a shot will be taken from the Michigan side.

A quick PSA from an old friend #GoBucks pic.twitter.com/m6WfandwPU
— Brutus Buckeye (@Brutus_Buckeye) April 29, 2020