The one-cap Springbok centre was introduced in the second half of Bordeaux's emphatic 64-14 victory over Leicester Tigers in their Investec Champions Cup round of 16 clash, but his appearance lasted only moments. He went down shortly after entering the field and had to be helped off, later leaving the venue on crutches.
The club confirmed the diagnosis in an official update, stating: "Rohan Janse van Rensburg's season has come to a premature end due to a ruptured achilles tendon sustained when he came on as a substitute against the Leicester Tigers last Sunday.
"Rohan will have participated in 19 matches during this 2025-26 season," the club added. "We wish him a speedy recovery and a successful rehabilitation!"
The setback adds to Bordeaux's injury concerns, with France international Nicolas Depoortere already sidelined with a shoulder problem.
Bordeaux now turn their attention to a high-profile Champions Cup quarter-final showdown against Toulouse on Sunday.
The Stormers were left to rue missed chances - and a contentious late call - as Toulon held on for a 28-27 win in a pulsating Investec Champions Cup Round of 16 clash at Stade Mayol.
The Stormers secured Investec Champions Cup qualification with a gritty 39-26 victory over Leicester Tigers in a pulsating encounter at the DHL Stadium on Saturday.
The Sharks kept their slim hopes in the Investec Champions Cup alive by duly thumping an outclassed Clermont side 50-12 at Kings Park on Saturday.
The Bulls kept their Investec Champions Cup campaign alive in France on Friday night by grinding out a gutsy 26–24 victory over Pau to halt a seven-match losing streak across all competitions.
