Looking at the opponent’s past moves, his choices appear balanced overall but a closer look reveals a subtle pattern. Notice that when his last move was scissors (as in rounds 3, 6, and now 9), he switched his move rather than repeating. Specifically, after round 3’s scissors he chose paper in round 4, and after round 6’s scissors he went with rock in round 7. If he’s alternating, it’s likely that after round 9’s scissors he’ll choose paper. Since scissors beat paper, I’ll choose scissors for round 10 in hopes of clinching the win (or at least a tie in wins, which is better than a loss).