He was included in the Sharks XV Vodacom Cup side in 2012 and made a late substitute appearance in their match against the Boland Cavaliers in Malmesbury to make his first class debut.
[4] He remained in the side for the rest of the season, starting two matches in total and making three substitute appearances, including coming on in the Currie Cup final, where he contributed to the Sharks beating Western Province 33–19.
[13] Lewies scored a try, prevented another one and got a try assist in 41-32 victory over league leaders Northampton Saints in the Big Summer Kick Off fixture hosted at Twickenham Stadium.
[17] After Bakkies Botha became unavailable and Flip van der Merwe got injured, Springbok coach Heyneke Meyer called up Lewies for the Test match against Scotland.
Lewies made his test debut on 28 June 2014, replacing stand-in captain Victor Matfield in the 55–6 thump over Scotland in Port Elizabeth.