matches = every match of the days you pick (any past date; the day lists reach 7 days back, older days come from our tennis database), with results, odds, head-to-head, form, Elo and statistics; live = matches in play right now; matchIds = specific matches by id or URL (any date); players = a player's matches, newest first (the whole career from the database, else about 40 recent); rankings = ATP / WTA rankings, one row per player (the latest, or the list of a past date); tournaments = every match of a tournament edition with its round; playerProfiles = one row per player: age, country, photo, rank, Elo per surface; playerStats = a player's record and serve / return statistics per season, surface, tour or opponent's rank; h2h = two players' head-to-head with every meeting; elo = the Elo list of a tour and surface; sackmann = every played singles match of the seasons in "years" (or the dateFrom..dateTo range; neither = this season) in the columns of Jeff Sackmann's atp_matches / wta_matches CSV files: winner and loser, rank at the time, age, score, round, minutes, serve statistics (tours: ATP and WTA unless set).
Options:matcheslivematchIdsplayersrankingstournamentsplayerProfilesplayerStatsh2helosackmann