Options resolve as the following:
For a match "Player A vs Player B", if the player A wins, the option resolves to 100%, if the player B wins, the option resolves to 0%.
This market evaluates the final result between two players for the round robin stage.
This typically involves a match 1, a match 2, and if the score is tied after 2 matches, an armageddon match. The armageddon match guarantees a winnder and these markets will resolve to the winner after round robin is complete.
Here are the matches for the other player's round robin
/firstuserhere/hikaru-nakamura-round-robin-matches
/firstuserhere/wesley-so-round-robin-matches-champ
/firstuserhere/alireza-firouzja-round-robin-matche
/firstuserhere/fabiano-caruana-round-robin-matches
/firstuserhere/magnus-carlsen-round-robin-matches-791f1642f865