Tenis

var obj = [];

    input.forEach(function (match) {
        var tokens = match.split(':');
        var players = tokens[0].split(/vs./);
        var tempObj = 0;
        var homePlayer = players[0].split(/\s+/g).join(' ').trim();
        var awayPlayer = players[1].split(/\s+/g).join(' ').trim();

        if (!(tempObj = contains(homePlayer))) {
            var player = createPlayer(homePlayer)
            player = addScore(player, tokens[1], true);

            obj.push(player);
        } else {
            obj[tempObj] = addScore(obj[tempObj], tokens[1], true);
        }

        if (!(tempObj = contains(awayPlayer))) {
            var player = createPlayer(awayPlayer);
            player = addScore(player, tokens[1], false);

            obj.push(player);
        } else {
            obj[tempObj] = addScore(obj[tempObj], tokens[1], false);
        }
    });

    obj.sort(function (x, y) {
       if (x.matchesWon !== y.matchesWon) {
           return (y.matchesWon - x.matchesWon);
       }

        if (x.setsWon !== y.setsWon) {
            return (y.setsWon - x.setsWon);
        }

        if (x.gamesWon !== y.gamesWon) {
            return (y.gamesWon - x.gamesWon);
        }

        return x.name.localeCompare(y.name);
    });


    function createPlayer(name) {
        var player = {};
        player.name = name;
        player.matchesWon = 0;
        player.matchesLost = 0;
        player.setsWon = 0;
        player.setsLost = 0;
        player.gamesWon = 0;
        player.gamesLost = 0;

        return player;
    }

    function contains(player) {
        for (var i in obj) {
            if(obj[i].name === player) {
                return i;
            }
        }

        return null;
    }

    function addScore(player, score, isHome) {
        var sets = score.trim().split(/\s+/g);
        var setsWon = 0;
        var setsLost = 0;

        sets.forEach(function (set) {
            var match = set.split('-');
            player.gamesWon += (isHome) ? Number(match[0]) : Number(match[1]);
            player.gamesLost += (!isHome) ? Number(match[0]) : Number(match[1]);

            if (Number(match[0]) > Number(match[1])) {
                setsWon = (isHome) ? setsWon + 1 : setsWon + 0;
                setsLost = (!isHome) ? setsLost + 1 : setsLost + 0;
            } else {
                setsWon = (!isHome) ? setsWon + 1 : setsWon + 0;
                setsLost = (isHome) ? setsLost + 1 : setsLost + 0;
            }
        });

        player.setsWon += setsWon;
        player.setsLost += setsLost;

        if (setsWon > setsLost) {
            player.matchesWon += 1;
        } else {
            player.matchesLost += 1;
        }

        return player;
    }

    console.log(JSON.stringify(obj));