A spokesperson for LSU Athletics says that Tittle, a native of Marshall, Tx., passed away overnight.
Tittle played for the Tigers from 1944-47.
Tittle's death was confirmed to his alma mater LSU by his family on Monday. However, Tittle never actually played for the Lions because he chose to start his career on the East Coast with the Baltimore Colts of the AAFL.
When Tittle left San Francisco, he went to NY to play for the Giants for the last four seasons of his career.
Melania Trump's Biting Response to Ivana Claiming She's "First Lady"
She says he asks for her advice on tweeting and offered her an ambassadorship to the Czech Republic , which she turned down. First Lady Melania Trump is blasting her husband's first wife as "attention-seeking and self-serving" over a harmless joke.
Y.A. Tittle was a Pro Football Hall of Fame quarterback for the 49ers, Colts and Giants.
His No. 14 jersey is retired by the New York Giants, and his record of seven touchdown passes in a single game still stands to this day (though it has been tied a couple of times). Tittle's passing total still stands as the 15th highest single-game total in National Football League history while his seven touchdowns are still tied as the top single-game performance by any quarterback in National Football League history.
The picture came after a play where Tittle was hit so hard that he suffered a concussion and a cracked sternum.
Some on Twitter commented on Tittle's greatness and suggested he was disheartened by the current Giants' dismal season.
Tittle never won a championship but was shown in an iconic photo taken by Dozier Mobley during his final season in 1964.
Tittle was named the MVP of an amusement that finished in a 0-0 tie with Arkansas.