Looking at the previous rounds, I notice several patterns. There have been many ties (6 out of 8 rounds), suggesting my opponent might be trying to predict and match my moves. The opponent has played rock more frequently than other options (3 times), and the only time I won was in round 6 when I played paper against their rock. Since we're tied 1-1 with only two rounds remaining, winning this round would give me a crucial advantage. Given the opponent's tendency to play rock and the success I've had with paper previously, I'll choose paper for round 9.