The 2nd Barrera fight. Haven't seen any other boring Pac fights though... although I only started watching him when he fought Barrera the 1st time so I don't know how many boring fights he might have had earlier in his career.
^^^^If you think his fights today are exciting, it was even more so during his flyweight days. Thing is he doesn't have great boxing background so most of his fights were into trenches......you'll be surprised that he was not a range fighter back then back goes to the body a lot...he more inside fighter back then but not sooo technical. Just bully your opponent into the ropes then whack at his body-type of fighter.
Cant think of any but, i havent seen ne of his fights back in the day. He prolly had a few that weren't to exciting.