Rivers ranked as the No. 68 DE in the nation by Scout.com and was rated the No. 74 DE in the nation by ESPN.com. Rivers participated in the DeKalb County Coaches Association All-Star game. He posted 81 tackles, nine sacks and two forced fumbles as a senior.
In 2011 Rivers Played in every game with five starts and made 13 total tackles and was tied for third on the team with 4.5 TFLs and second with 2.0 sacks. The previous season, 2010, he played in 10 games with five starts and tied for fourth on the team with 2.5 sacks and finished with 14 total tackles, including 3.0 TFLs while earning an earning second letter. In 2009, he saw action in five games ... Made four stops (three solo) with one TFL on the year and earned first letter.
Rivers was signed as an undrafted free agent on April 29, 2013, he is signed for 3 years/$1.49 million with the St. Louis Rams. Rivers made the team on August 29. 2013.
He was released by the Rams in December 2013.
Rivers was claimed off waivers by the Jacksonville Jaguars on December 16, 2013. The Jaguars released Rivers on August 29, 2014.
On September 2, 2014, Rivers was signed to the Dolphins' practice squad. On September 30, 2014, he was released from practice squad.
On October 15, 2014, Rivers was signed to the Broncos' practice squad. On December 4, 2014, he was released. On December 10, 2014, he was re-signed to the practice squad. On January 12, 2015, he was signed a future contract. On September 5, 2015, he was waived.
On September 9, 2015, Rivers was signed to the New York Giants practice squad. On September 16, 2015, he was released by the Giants.
On October 27, 2015, Rivers was signed to the Rams' practice squad. On November 17, 2015, he was released by the Rams.
On November 24, 2015 Rivers was signed to the Houston Texans' practice squad. On August 30, 2016, Rivers was placed on injured reserve.
On April 13, 2017, Rivers was waived by the Texans with failed physical designation.