Kidlington Forum's Andrew Flint was crowned the Oxford & District League Division 1 KO champion - just four days after completing the London Marathon.
He was in unstoppable form in the final, beating Andy Packford (Crown House) 21-10, 21-10.
In the semi-finals, Flint came from behind to beat his twin brother and teammate Jeremy 10-21, 24-22, 21-18.
Fourteen-year-old Greg Boone completed a notable hat-trick with victory in the Division 2 KO final - following triumphs in the Division 3 and 4 competitions in the last two years.
His final victim this time was Gladiator's Kevin Giles, who went down 21-16, 21-16.
Boone had been taken to three sets in the semis before edging past Paul Knight (Gladiator Club) 21-17 in the third set.
In the Division 3 final, Haddenham B's Mark Penn, who was unbeaten in the league this season, defeated teammate Simon Witney 21-18, 21-8.
Morris Motors' Barry Osborne defeated Kidlington Forum's Glen Stiffle 21-18, 21-9 in the Division 4 final.
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