The dash is a replacement for the words "scoring the" or "got the" or something similar, much in the same way an apostrophe is used in place of a letter.
It is assumed people are smart enough to insert the missing letters or words. It's ol' skool, something they wouldn't have taught in modern day English along with grammar. But it doesn't make it wrong, just means the person who wrote it comes from a different era and has been educated in a different way. It really is a reflection on the current state of todays education system and the knuckleheads teaching it. If oldies are expected to understand ch0pzta and all the current abbreviated words for texting or the lack of knowing how to spell, then this younger generation should understand something of the older generations scribe.
That said, there was plenty of room to insert the extra words to avoid confusion. But it is likely it was never even a consideration.
L8rz, Jim
