I didn't mean tarnish like it would ruin his legacy. I probably should have used a different word. I meant it would tarnish it a bit, not major. I guess not knowing the best way to say it, just leave a bad taste in your mouth at the end of his career. I don't mean it would erase all the accomplishments he did for his career and people only remembering him being a shell of himself on his third team.
It was a bad look for Marino and it was a bad finish to an impressive career. It would have been the same with Manning if he didn't have a team that carried him to a Super Bowl win in his final year. I mean if Brady is playing for say San Fran, Miami, or one of the NY teams and only completing 55% of his passes and had 15-20 INTs and 15-20 TDs, it would be a bit of an embarrassing end to the career of the GOAT.