William Koster

11 matches · 4 won · 7 lost · 0 with video

Sussex Open 2026 - Summer Edition 2026-08-01

🥈 2nd Kids and Juvenile Entry - Boys Gi / 45kg and under / 8 - 12 years old / Grey

Lost vs Sebastian Corless (Rogers Jiu Jitsu Academy)
Kids and Juvenile Entry - Boys Gi / 45kg and under / 8 - 12 years old / Grey · Round 2 · submission
Won vs Zachary Dobinson (Grapplers Guild)
Kids and Juvenile Entry - Boys Gi / 45kg and under / 8 - 12 years old / Grey · Round 1 · submission
Lost vs Sebastian Corless (Rogers Jiu Jitsu Academy)
Kids and Juvenile Entry - Boys Gi / 45kg and under / 8 - 12 years old / Grey · Round 1 · submission

🥈 2nd Boys Gi / Grey / Teen I (12 & 13 years) / -42 kg

Won vs Olly Smith (Koba BJJ)
Boys Gi / Grey / Teen I (12 & 13 years) / -42 kg · Round 3 · walkover
Lost vs Sidney Robbins (CFS BJJ)
Boys Gi / Grey / Teen I (12 & 13 years) / -42 kg · Round 1 · submission

🥉 3rd Kids and Juvenile Entry - Boys Gi / 42.5kg and under / 8 - 12 years old / Grey

Won vs Harry Thurlow (Jay Butler Brazilian Jiu Jitsu)
Kids and Juvenile Entry - Boys Gi / 42.5kg and under / 8 - 12 years old / Grey · Round 3 · submission
Lost vs Majus Ubartas (SWBJJ)
Kids and Juvenile Entry - Boys Gi / 42.5kg and under / 8 - 12 years old / Grey · Round 2 · submission

🥉 3rd Junior / Male / Grey / Junior 2 / 42kg or less

Lost vs Yusuf Ishfaq (Khalid Ismail Academy)
Junior / Male / Grey / Junior 2 / 42kg or less · Round 3 · submission
Lost vs Vinnie Tubbs (Combat Sports Academy (Strood))
Junior / Male / Grey / Junior 2 / 42kg or less · Round 2 · submission

🥈 2nd Junior / Male / Grey / Junior 2 / 38kg or less

Lost vs Louis Goddard (SWBJJ)
Junior / Male / Grey / Junior 2 / 38kg or less · Round 2 · submission
Won vs Adam Boksh (Atos Jiu Jitsu UK)
Junior / Male / Grey / Junior 2 / 38kg or less · Round 1 · walkover

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