Career
His regular position is loose-forward. Youth
He represented the Leopards at the 2006 Under-16 Grant Khomo Week, 2007 Under-18 Academy Week and 2008 Under-18 Craven Week competitions. His performances in the latter also resulted in his inclusion in an Under-18 South African Elite squad in 2008.
The then joined the Natal Sharks and was included in their U19 squad for the 2009 Under-19 Provincial Championship competition.
Golden Lions
He never appeared in the competition proper, instead representing the Golden Lions U21 team in the 2011 Under-21 Provincial Championship competition, making twelve appearances. Varsity Rugby
He played in the 2013 Varsity Cup competition for Wits, scoring five tries in seven appearances, making him the joint second top try scorer in the competition.
Griquas
He made his debut for them in the opening match of the season, coming on as a half-time in their match against the Natal Sharks in Durban. He scored a try in injury time to tie the score 30–30 and a Nico Scheepers conversion gave Griquas a dramatic victory.
Cheetahs
In 2014, Greeff was included in the Cheetahs squad for the 2014 Super Rugby season.
He was named on the bench for their matches against the Force and the Brumbies, but didn"t get playing time. However, on 24 May 2014, he made his Super Rugby debut against the Stormers in Cape Town, coming on as a reserve flank. Pumas
Greeff signed a two-year contract with Portuguese Elizabeth-based Super Rugby side the Eastern Province Kings prior to the 2016 season.
However, after the side failed to pay players" salaries, allowing all players to join other teams, Greeff moved to Nelspruit to join the Pumas on a two-year deal instead.