<p>There are comeback stories and then there is Philip Rivers. Five years after retiring from the NFL, the 44-year-old grandfather strapped on the cleats to try and drag his old team into the playoffs. His reasoning for taking on the challenge was something from cult TV show 'Friday Night Lights'. Featured: Phil Murphy, NFL reporter, ESPN. </p><p><a href="https://www.abc.net.au/connect" target="_blank">Subscribe to the ABC Sport Newsletter</a></p>