Jockey Alan Munro picked up a seven-day suspension from the Jockey Club in London for his part in a weighing-room brawl with fellow rider Richard Hills.
Munro also that his temper would be kept under control in future arising out of an alteraction with Richard Quinn at Newmarket on May 21 last, which left Quinn with a black eye and swollen cheekbone.
The fight is believed to come about after an incident between horses ridden by the two jockeys at Windsor five days earlier.
The Jockey Club found Alan Munro guilty under Rule 220(ii)
of violent or improper conduct and imposed a suspension which runs from July 29 to August 4.
While the exact circumstances behind the brawl remain between the two jockeys, Munro - who was not legally represented - said after the hearing that he was keen to put the incident behind him as quickly as possible.
He said: "I think it is probably an appropriate penalty in the circumstances. It was a totally regrettable incident and I have apologised sincerely for what happened, both to Richard and to the Jockey Club.
"All I want to do now is move on and get back to riding winners once I have served my ban."