Complex sentence: In amateur boxing, a knockout is scored as "referee stopped contest" (RSC), and a technical knockout ("outclassed") can also be declared if a fighter is behind by 15 points in a bout.
Split into simpler sentences: In amateur boxing, a knockout is scored as "referee stopped contest" (RSC). A technical knockout ("outclassed") can also be declared if a fighter is behind by 15 points in a bout.