"Eleven years and I can honestly say I put my soul into every minute of it", Long said in a tweet.
Long entered the National Football League as the No. 2 overall pick of the St. Louis Rams in the 2008 draft.
Long, a native of Santa Monica, Calif., was at his statistical best from 2010-13 in St. Louis, recording at least 8.5 sacks in each of those four seasons.
Long has been a very productive player during his tenure in the NFL.
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Following the win over Atlanta, Long's social activism first became noticed by the at-large public when he chose to skip the Patriots visit to the White House.
However, and perhaps most notably, Long was a social justice activist who supported fellow protesting players in Philadelphia. "Long donated his entire 2017 salary to charity, with the money from each game check going to a different charity", UPI reports.
Then, Chris turned his attention to the City of Brotherly Love, where he played his final two seasons with the Eagles, and helped bring home the first Super Bowl in franchise history.
"When you look at everything Chris Long accomplished as a player and person, it's easy to see how fortunate we've been to have him on our team", the Eagles said in a statement released by the team.
"There's no question that his work ethic combined with his unique talent made him into one of the greatest of this era's professional athletes".