Career
A winger, he has represented Wales at Under-20 level Pewtner previously played for Ystrad Mynach Reconstruction Finance Corporation, Blackwood Reconstruction Finance Corporation, Cross Keys Reconstruction Finance Corporation, and the Newport Gwent Dragons Under-20 regional team He made his debut for the Newport Gwent Dragons versus Sale Sharks on 6 November 2009 as a second-half replacement.
On 22 December 2009 he was named in the Wales Under 20 Squad for the 2010 Under-20 Six Nations tournament.
Pewtner retired from rugby aged 25 in February 2016 due to a concussion injury.