A winner of the Varsity Cup with UCT in 2011, Groom received a swift call up to the Stormers side at the tail-end of the Super Rugby season to replace the injured Dewaldt Duvenhage and Ricky Januarie and he made a couple of substitute appearances.
2013 saw the departure of Duvenhage and Groom was now in a one-on-one fight with Louis Schreuder for the Stormers and Province number 9 jersey and as a result he saw much more game time.
He was a Currie Cup runner up in 2013 and he largely had to make do with appearances from the substitutes bench as Schreuder stole a march in the battle to be first choice scrum-half.
[1] Groom has been a regular feature in the Saints' starting side and was instrumental in them securing European Champions Cup rugby for the 2017/18 season, featuring heavily in both the European Champions Cup play-off games where Saints saw off both Connacht Rugby and Stade Francais to secure their spot in the competition for the following season.
[6] On 28 May 2016, Groom was included in a 31-man South Africa squad for their three-test match series against a touring Ireland team.