Looking at the opponent's recent moves, I notice they've chosen scissors in rounds 6 and 8, with paper in round 7. There seems to be an alternating pattern of paper-scissors in the last few rounds. If this pattern continues, they might choose paper in round 9, which scissors would beat. Additionally, with a comfortable lead of 3-1, I can afford this strategic choice even if it doesn't work out. My goal is to secure the win before the final round.