On March 7, 2016, quarterback Peyton Manning retired after 18 NFL seasons during a press conference at the team's Dove Valley headquarters. While he left a legacy behind football wasn't Peyton Manning's only accomplishment. Peyton and Ashley Manning established the PeyBack Foundation in 1999 to promote the future success of disadvantaged youth by assisting programs that provide leadership and growth opportunities for children at risk. Following Manning's retirement, the Broncos have undergone changes at the quarterback position, including the free agent departure of backup quarterback Brock Osweiler to the Houston Texans, the trade acquisition of Mark Sanchez from the Philadelphia Eagles and the selection of Paxton Lynch during the 2016 draft. Sanchez, Lynch and second-year quarterback Trevor Siemian competed for the starting quarterback spot during the off-season and preseason; however, Sanchez was released and Siemian was named the starter prior to the start of the season. The Broncos finished the season 9–7 and missed the playoffs for the first time since 2010. On January 2, 2017, coach Gary Kubiak announced his retirement, citing health as the main reason for retiring. The Broncos later hired Vance Joseph as head coach on January 11, 2017. The Broncos finished 5–11 in 2017 due to a poor offense, and signed quarterback Case Keenum in 2018. After getting off to a strong start, their 2018 season was mostly up and down, eventually finishing with a 6–10 record and third place in the AFC West. Coupled with the 5–11 season in 2017, the Broncos had back-to-back losing seasons for the first time since 1971–1972. Shortly after finishing the regular season, head coach Vance Joseph was fired after having only an 11–21 record in two seasons.