If the referee has to stop a bout in the first round because a boxer has suffered a cut eye or a similar injury, the other boxer is declared the winner. If it happens in the second or third round, though, the judges' point tallies up to that time determine the winner.
Three doctors sit at ringside and each has the authority to stop a bout if medical reasons appear to necessitate it
If both boxers go down at the same time, counting continues as long as one remains down. If both remain down at 10, the boxer with the most points is declared the winner.
Other ways a boxer may be declared the winner during a bout include the referee stopping the bout because the opponent is taking too much punishment, or the opponent being disqualified or withdrawing, perhaps because of injury. Also, the opponent's seconds could decide he is suffering too much punishment and throw in the towel.
Boxers are required to shake hands before the first round and after the results have been declared.
The age limits for Olympic boxing are a minimum age of 17 and a maximum age of 34.
Boxers must be clean shaven or facial hair restricted to a small moustache no longer than the length of the upper lip. Beards are banned.
Before every bout, a medical examiner must declare the boxers fit.
Boxers must weigh in every day.
Boxers must wear boxing gloves conforming to AIBA standards. Gloves weigh 10 ounces and feature a white strip to mark the main hitting area.
Competitors wear either red or blue.
Bouts are conducted in a square ring measuring 6.1 metres inside the ropes on each side. The floor of the ring consists of canvas stretched over a soft underlay, and it extends 45.72 centimetres outside the ropes.
Each side of the ring has four ropes running parallel to it. The lowest one runs 40.66cm above the ground, and the ropes are 30.48cm apart.
The corners of the ring are distinguished by colors. The corners occupied by the boxers are coloured red and blue, and the other two corners, called "neutral" corners, are white.
See also: Amateur Boxing Rules.