Jason Richardson has confirmed that he is retiring from the NBA, posting a selection of photos to his Instagram page last night. After 14 seasons and two Slam Dunk Contest wins, the ageing guard is stepping away from the game, leaving a legacy sure to be remembered. His retirement comes in spite of the fact that he recently signed a one-year contract with the Atlanta Hawks, but he said on his Instagram that he was making the decision so he could keep his health and spend more time with his family. Meanwhile in the NFL, Kam Chancellor has confirmed he is ready to play football again, having ended his 54-day holdout on Wednesday. The Seattle Seahawks strong safety is expected to now be on the field when his team face the Chicago Bears at CenturyLink Field on Sunday, with head coach Pete Carroll hailing the potential difference he could make.