Say what you like about the Old Firm Facts podcast, but it's almost certainly the only Scottish football show released this week to feature an unexpected cameo from an Olympic gold medallist doing her laundry. 

That appearance occurs thanks to ESPN commentator and football author Mark Donaldson. He discusses what Hearts becoming Britain's biggest fan-owned club means to him, Serie A, commentating on the US Open, Liverpool legend Steve Nicol's shepherd's pie post-its, hanging out with Pitch Perfect star Rebel Wison, writing the late Paul Mariner's autobiography, Terry Butcher's Knebworth near-miss, the trap commentators can fall into and failing to recognise a legendary World Cup winner.

Reigning Scottish Comedian of the Year Marc Jennings talks about Steve Clarke, being chastised as a Celtic ball boy, an obscure piece of Scottish football literature, performing stand-up, Dave Chappelle's gravitas, the link between Lionel Messi and Chris Rock, call centre life, a Scottish football x Curb Your Enthusiasm crossover and the time Celtic were overshadowed by r'n'b star Ne-Yo.

Adam enlists Mark and Marc to help him debunk two myths involving Andy Murray, shares his dislike of Novak Djokovic, asks his guests questions submitted by listeners, debunks another Ronaldo myth, shares a rare bit of positivity from Twitter and somehow finds a flaw in the Ally McCoist classic A Shot At Glory.

For more information about Old Firm Facts, go to: www.thebiglight.com/oldfirmfacts