The award came off the back of him scoring 8 tries for Harlequins throughout the season after qualifying for the playoffs in an attempt to retain the Premiership title.

[12] On 5 January 2022, Esterhuizen scored a try against in a absence of a number of key players including England internationals Marcus Smith and Danny Care, going on to win man of the match against Newcastle Falcons as Harlequins won 24-3 away.

[13] On 8 January 2022, Esterhuizen scored a last minute try and completed the game winning turnover to beat Exeter Chiefs.

[15] In April 2024, he scored a try from a cross-field kick by Marcus Smith as Harlequins won their first ever Champions Cup knockout game beating Glasgow Warriors 28-24 at home.

[19] In September 2023, Esterhuizen was named as part of South Africa's squad for the 2023 Rugby World Cup.

[21] Club Harlequins: 1x Gallagher Premiership (2020-2021) Country South Africa 1x Rugby World Cup (2023) Esterhuizen and his wife Mabea have one daughter.