Calvin Ridley said he gambled on football during a period when he was depressed and angry and called it "stupid" and the "'worst mistake of his life."

Ridley was reinstated by the NFL this week.

Ridley downloaded a gambling app, deposited $1,500, and bet on NBA and NFL games, including the Falcons.

"I just f---ed up. Period." Ridley wrote. "In a dark moment, I made a stupid mistake. I wasn't trying to cheat the game. That's the thing I want to make clear. At the time, I had been away from the team for about a month. I was still just so depressed and angry, and the days were so long. I was just looking for anything to take my mind off of things and make the day go faster."