Based on the pattern analysis, the opponent seems likely to play paper in this round after playing rock in round 9. This follows the observed tendency in their play pattern. Additionally, they've used paper in rounds 2, 5, and 8, suggesting they might use it again. Since scissors beats paper, this gives me the best chance to win the final round. I need this win to bring the score to 3-4, which is the best outcome possible at this point.