He featured during the regular season of the competition to help Western Province finish top of the log.
He was included in the Free State U21 squad for the 2011 Under-21 Provincial Championship, but failed to feature in any matches.
Kruger scored a try on the hour mark in their semi-final – just three minutes after coming on as a replacement – but it wasn't enough as eventual champions Blue Bulls U21 won the match 31–24.
[3] Despite being included in the Free State XV squads that played in the Vodacom Cup in 2012 and 2013, Kruger didn't feature in any of those competitions and it wasn't until 2015 – after featuring in four matches for the UFS Shimlas in a 2015 Varsity Cup season that saw them crowned champions for the first time after beating the NWU Pukke 63–33 in the final[4] – that Kruger made his first class debut; he was named in the Free State Cheetahs squad for the 2015 Currie Cup Premier Division and played off the bench in their 31–73 defeat to the Golden Lions.
They both played for the Free State Cheetahs in the 2015 Currie Cup; Tertius made his first class debut one week before De Wet and the two brothers featured in a match together when De Wet made his debut in their defeat to the Golden Lions.