William Quintin Hayes (born May 2, 1985) is an American former professional football defensive end.

In 2006, he became one of the team's top defensive players last season, playing in all 11 games with nine starts after he appeared in all 11 games last season and made 57 tackles with (25 solo) and led the team in sacks with 6.5 yards and total tackles for a loss with 13 for a loss and he even added an interception and also added four pass breakups and even had two quarterback hurries and two fumble recoveries.

Hayes helped his draft stock considerably when he was clocked at 4.59 in the 40-yard dash at his pro day at Wake Forest University in March 2008.

In his rookie season he made 13 tackles and one sack as a reserve defensive end for the Titans.

"[10] In a 2016 segment on HBO's Hard Knocks, it was revealed that Hayes is a firm believer in mermaids.

According to head coach Jeff Fisher, "I remember him getting really excited about the potential for moving out here [from St. Louis to Los Angeles] because he knew he would be closer to mermaids here on the West Coast.

in November 2016, Hayes toured the Dinosaur Hall at the Natural History Museum of Los Angeles County with Kimmel and a paleontologist, Daniel Caballero.

However, the visit reinforced his belief in the existence of mermaids after a short discussion about the potential for the future discovery of the species.