304 victories by ippon (the highest judo score).
Bronze medal at the 2008 Beijing Olympics.
Silver and bronze medals at the 2001 and 2003 world championships.
Gold at the 2000 and 2003 European championships and silver in 2005 and 2006.
His trainer was also recognised and won the trainer of the year award in 2008.
Three qualifications for the Olympic Games (only 9 Europeans out of 500 are selected). At only 24, he qualified for the Sydney games where he unfortunately lost the first round. At 28, he was very disappointed by his failure at the Athens games. But working on these disappointments brought him to the 2008 Beijing games and victory, winning the bronze medal against the Russian judo player.
2008 Beijing: bronze medal
2004 Athens: participation at the Olympic Games
2000 Sydney: participation at the Olympic Games
2003 Osaka: silver medal
2001 Munich: bronze medal
2006 Tampere: bronze medal
2005 Rotterdam: bronze medal
2003 Dusseldorf: gold medal
2000 Wroclaw: gold medal
Sergei won at Wold Cup tournaments alltogether:
10 x first place
13 x second place
16 x third place
Sergei was 8 times Swiss Champion
Sergei was 6 times regional Champion