How NOT to play centre game!

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JustOneUSer
A match I had recently with a level mid-900 player- not a good game on his part!

Here are the moves-(I'm black)

1. E4, E5
2. D4, ExD4
3. E5, Nc6
4. F4, D6
5. Nf3, Qe7
6. Nxd4, Dxe5
7. Bd4, (OOPS!), Exd4+
8.Be2, Bf5
9 G4, bxg4,

And white resigns.

(Sorry about my bad notation skills!)