Supercars pundit Mark Larkham looks into how fatigue got the better of David Reynolds during the Supercheap Auto Bathurst 1000.

The Erebus driver suffered from cramp in the latter stages of the race, ceding the race lead and eventually having to hand the car over to his Pirtek Enduro Cup co-driver Luke Youlden.

Larkham speaks with Reynolds, team principal Barry Ryan, and engineer Alistair McVean to understand exactly how the race unfolded.