Rodney Harrison in 2004 - Globe Staff Photo / Matthew J. Lee

After playing 15 years in the NFL with the San Diego Chargers and New England Patriots, Rodney Harrison will be trading his football uniform in for a suit and microphone with NBC.

I had the opportunity and privilege to play in this league for a long time, but today, I am very proud and very excited to announce my retirement from the NFL. … All in all, I’ve done everything I could possibly do on the field. I feel like I have nothing else to prove.”

During the conference call with reporters, Harrison said that there were teams interested in his services for this year but he decided that family was the most important thing to him at this point. By working for NBC on their Sunday night telecasts, he will have plenty of time to spend with his family.

He also spoke about the “huge mistake” he made when he was suspended for HGH use.

“I had so much pride about trying to do things right,” he said. “I made such a huge mistake in that situation and disappointed so many people, including myself. When I made that mistake, I wanted other guys and kids to learn from that.”

Harrison won two Super Bowls in his career with the Patriots. He finishes with 1,205 tackles, 30.5 sacks, 34 interceptions and 2 touchdowns.

Audio: Harrison announces retirement [Reiss’ Pieces]