Rhys Ruddock got a lesson in maths from referee Nigel Owens in a classic moment from the Welshman after the Leinster captain complained about a couple of Cardiff infringements inside their 22.
Classic Nigel Owens 😂👏🏻 pic.twitter.com/GpTNfBYeuG
— RugbyLAD (@RugbyLAD7) August 31, 2018