In his final final season, Darren Sproles is going out on his terms - The Athletic
Philadelphia Eagles running back Darren Sproles to retire after the 2018 season, NFL News
Darren Sproles says he's still open to playing football in 2019 - Bleeding Green Nation
Former Chargers RB Darren Sproles doesn't mince words on why Bolts won't win AFC West : r/Chargers
Injured Eagle Darren Sproles retires after 15 seasons
Rob Ninkovich Conference Call Transcript
Coach Bill Snyder Retires from Kansas State Football; Impact is Felt in Abilene – The Booster
Darren Sproles Announces His Retirement - Sports Illustrated Philadelphia Eagles News, Analysis and More
Eagles RB Darren Sproles ends career that could land him in Hall – The Morning Call
Darren Sproles to retire from NFL after 2018 season
Darren Sproles among several former Eagles that are joining the team's personnel department
Los Angeles Chargers - Wikipedia
NFL training camps: a team-by-team outlook – The Denver Post
Philip Rivers - Wikipedia