Very nice. The best I have thrown was the first 9, then I was quaking in my shoes in the 10th frame and shanked it pretty good on the next throw. I think I wound up with a 263.
I've seen my share of 300 games from our league bowlers, an 800 series and several near miss 800 series, and a 7-10 pickup but nothing like two back to back 300s.
My only claim to fame was an all spare game. Now that was hard.
