You should always consider a fact that API outcome is updated with some delay (up to 24 hours).
I do not see this player registered using API now, so I assume that this player was registered some times ago, but withdrew from participation later on and API data have not been yet updated, when you were trying to compare them with data on a web page (which are always updated).
This user @splattergun is registered for team match in API but not on Web page.
Is also not a member of the Team.
https://www.chess.com/club/matches/1096702/games
https://api.chess.com/pub/match/1096702