Minor-6.3 - low blocking
skaters may not trip or intentionally fall in front of another skater. any contact which lands on an opponents feet or legs, below the legal target zone, that causes the skater to stumble or fall is considered tripping and/or low blocking. downed skaters re-entering the track are subject to tripping/low blocking penalties even on the first instance, and even if the downed skater has fallen small.
6.3.5 - a downed skater re-entering the track that causes an opposing skater to stumble but not fall or lose her relative position.