I was white, my opponent (rnd 5 huddersfield) was a 16yo abouts boy and he decides to play knight odds maybe unententialy and almost does a magnus carlsen against Gwaine Jones on me(magnus made a blunder and completely humiliated Gwaine by outplaying him a knight down). I offered a draw midway through because I thought he might have the beating of me but he refused the draw and i went on to win.
After the game my opponent showed scant regard for chess etiquet and scrumpled up his scoresheet infront of me and said the game was rubbish-now i had played probably up there as one of my best ever games so i felt upset by his insult on my ability and accused him of cheating, my feet didnt catch the ground before i was marched out the room by the organizer and told i was banned from the venue, i went to get the record of the game which was a scoresheet in the playing area so i had proof of the game and the organizer promptly rugby tackled me and after i manage to break free i got the record of the game and my other stuff and he promptly tried to get a vulnerable adult ie me with a severe mental illness, chucked out of the hotel when i had plans to leave the next day and had no idea of the train times on a sunday.