The 7-10 involves much more luck than skill.
I've seen 3 people pick up the 7-10 that have no shot at a 300 game or 800 series.
Myself, I have picked up the 7-10 twice, with three 300's, and one 800.
The USBC should start listing 7-10's and Big Four's on the member's profile.
Well, for that matter, Triplicate's, All-Spare's, Dutch 200's (I also have one of those, not a good thing).
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titletowncards