When Seven lost the broadcast rights for AFL matches at the end of 2001, Walls was recruited by both Network Ten and the now defunct AFL-dedicated Fox Footy pay television channel. He provided special comments during match broadcasts, and was a member of Fox Footy's On the Couch with Gerard Healy and Mike Sheahan from 2002 until 2008. He then switched to the One HD Monday night program with Stephen Quartermain to co-host the new football discussion show One Week at a Time. He also commentated for radio station 3AW.