I was practicing with a teammate recently. He did a head-ball break, didn't make anything, and I ran out.
His next time breaking, he switched to the second ball break. When I asked why, he said he doesn't want to leave an open table for me to run out if he doesn't make a ball.
So get this, he breaks and runs out 4 racks in a row with the second ball break.
Then he breaks dry with the second ball break, and I ran out anyway.
Crazy stuff can happen that defies all odds sometimes, regardless of the type of break.