Mason Bumba of Team Revolution and Trey Browne Williams of Top Ten Team USA face off in the Men's Middleweight Sparring Grand Championship at the 2026 AKA Warrior Cup in Chicago, Illinois. All videos uploaded by Sport Karate Zone from this event are dedicated to remembering the life and legacy of Sensei John Sharkey. Get in The Zone on Instagram: https://www.instagram.com/sportkaratezone?igsh=N3ZjcDFyMTRiMHBi&utm_source=qr Like/Follow SKZ on Facebook: https://www.facebook.com/profile.php?id=61556832383575 Special thanks to Mike Brumme for his contributions to documenting the events at the AKA Warrior Cup.