Based on the pattern analysis, my opponent has frequently matched my moves leading to ties, or played moves that counter mine. There's been a recent tendency toward rock (rounds 3, 5, 9), and after our mutual rock play in round 9, they might anticipate me switching to paper, leading them to play scissors. By choosing rock, I can potentially counter their scissors if they make this prediction. Additionally, rock has been involved in 5 of the previous 9 rounds, suggesting it might be a favored option in their strategy.