Motor City Open Round 4

I offered a draw on move 5, he declined, then he made a slight error with 9.f4?! when 9.Bb3 is common. Then he offered a draw.

N. Mitkov - Ben Finegold
1. e4 c5 2. Nc3 Nc6 3. Nf3 d6 4. Bc4 e6 5. O-O Nf6 6. d4 cxd4 7. Nxd4 Be7 8. Be3 O-O 9. f4 d5 10. exd5 1/2-1/2