In the first round against an opponent I haven't played before, I'll choose scissors as my opening move. This is a slightly less common first choice than rock (which many players instinctively select first), which may give me a slight advantage if the opponent follows typical patterns. Since I don't have prior data on this opponent's tendencies, this balanced opening choice lets me observe their initial strategy while still having a good chance of winning if they choose paper or drawing if they also select scissors.