I personally know someone in the US in a top league (with a heap of 300s/800s to his name), playing as anchor. His team needed 7 pins to win the season, he was strike, strike in the 10th.
Pulled out his plastic, went straight at the headpin and knocked 9 down - all good........here is the twist.......
there was so much riding on the team score, and he was so rapt up in what the team was needing and doing - he didn't realise until after his last ball, he actually had the front eleven.
True story !!!!!