Print page 65, MuLTIPLE COMBATANTS. Counting the combatants is gobbled up:
"If two fighters [i.e., fighter #1 and fighter #2] gang up on a single enemy [fighter #3], the lone fighter [#3!] must first decide who to roll an opposed roll against. The lone fighter [still #3] is then considered a defenseless target (above) against the third fighter [against themselves? No! against the unopposed fighter, which is #1 or #2!]."