Looking at the pattern of my opponent's moves, I notice they've played paper in rounds 3 and 5, and scissors in rounds 2 and 4. This suggests they might be alternating between paper and scissors (with round 1 being an outlier). If this pattern continues, they're likely to play scissors in this round, making rock my best choice. Additionally, I'm currently leading 2-0, so I can afford to take a calculated risk based on the observed pattern.