Tooting judoka Winston Gordon has hit out at the sport's UK governing body.
Gordon lost in the second round of the 90kg judo tournament to Russian Kirillov Renisov despite a fine display in the opening round.
But following the 35-year-old's exit from the Games, British Judo Association head Densign White came out and said things needed to be "shaken up" in the sport.
In response, Gordon, who teaches judo at his former school Ernest Bevin, responded angrily not only openly criticising White, but also stating he would welcome new leadership.
The triple Olympian said: "My grandmother told me there is a saying: when a fish rots, it rots from the head.
"I hope the new chairman coming in, when White steps down after the Olympics, shakes a few feathers.
"My grandmother told me there is a saying: when a fish rots, it rots from the head."
White had claimed some of Team GB's elite fighters have missed a unique chance to become Olympic champions at their home games, with only Colin Oates so far making it into the afternoon medal blocks before finishing seventh.
He pointed to the lack of commitment from athletes to the centralisation plan for the British Performance Institute at Dartford.
Gordon added: "If someone is coming out with those comments, then they have to look on themselves and see what they have done to help everything else come through.
"They are the ones who employ the coaches. Centralisation can work, but you need to get everybody under the roof, all the coaches from the regional clubs, one or two of the players, sitting around the mat and have a big discussion on how we can go forwards."
However, following Gemma Gibbons' stunning and unexpected silver medal in the women's 78kg competition on Thursday, White's criticism seemed wide of the mark.
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