"Underdog" is the third single released from the album West Ryder Pauper Lunatic Asylum by English band Kasabian.
Underdog is currently used as the run out music for Welsh United Rugby Championship side Dragons RFC The song was also featured on an episode of The World's Strictest Parents in Australia.
The advert also features Real Madrid and Brazilian football player Kaká while he was with his former team AC Milan wearing their home kit.
This song is also used by Cancer Research UK's Race for Life campaign, appearing in television and radio advertisements, and played at the start of each event.
"Underdog" was also used as the entrance music for George Groves in his boxing match against Carl Froch at Wembley Stadium.