Former NFL player Warren Sapp announced on Tuesday he will donate his brain to the Concussion Legacy Foundation.

In a video posted on The Players' Tribune, Sapp said he decided to donate his brain upon receiving an email with quote from NFL owners saying there is no correlation between CTE and health and mental issues later in life.

“With the reminders in my phone it really helped me get through my day with appointments and different things that I have to do, because it’s just, I just can’t remember anymore like I used to,” Sapp said. “And it’s from the banging we did as football players. We used to tackle them by the head, used to grab face masks. We used to allow Deacon Jones to do the head slap. All of that was something that we had to take away from the game.”

Sapp said he wants to leave the game better than he found it and keep improving how it’s played, especially for young players.

Sapp joins former players Matt Hassellbeck, Leonard Marhsall and Frank Wycheck in the pledge to donate their brains to concussion research at the Concussion Legacy Foundation.

In his 13 seasons in the NFL, Sapp played for the Tampa Bay Buccaneers and Oakland Raiders and recorded 96.5 sacks.

Sapp's full statement can be read on The Players' Tribune.