[Event "US Open-73"]
[Site "Atlantic City"]
[Date "1972.??.??"]
[Round "9"]
[White "Blocker, Calvin"]
[Black "Keffer, T"]
[Result "1-0"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Bg5 h6 5. Bxf6 exf6 6. f4 Nc6 7. Nf3 Bg7 8. Bc4 Ne7 9. O-O O-O 10. Qe1 a6 11. Ne2 b5 12. Bd3 Bb7 13. Ng3 c5 14. c3 Re8 15. Qf2 Kh7 16. f5 c4 17. Bc2 d5 18. e5 fxe5 19. Nh4 Bh8 20. fxg6+ fxg6 21. Qf7+ Bg7 22. Nxg6 e4 23. Nh5 Rg8 24. Nf6# 1-0