The numbers refer to the won-loss records against the run line (baseball’s version of the point spread).
For Cleveland, the numbers refer to:
96-57 in all games
77-76 in away games, like they are in this game
66-72 when they are the run line favorite, like they are in this game
For Seattle, the numbers refer to:
74-79 in all games
66-87 in home games, like they are in this game
38-38 when they are the run line underdog, like they are in this game