2v2 Doubles

    {
        name: "2v2 Doubles",
        section: 'Other Metagames',

        gameType: 'doubles',
        ruleset: ['Pokemon', 'Standard', 'Swagger Clause', 'Team Preview'],
        banlist: ['Arceus', 'Deoxys-Attack', 'Dialga', 'Giratina', 'Giratina-Origin', 'Groudon', 'Ho-Oh',
            'Kyogre', 'Kyurem-White', 'Lugia', 'Mewtwo', 'Palkia', 'Rayquaza', 'Reshiram', 'Xerneas', 'Yveltal',
            'Zekrom', 'Soul Dew', 'Perish Song', 'Dark Void', 'Explosion', 'Self-Destruct'
        ],
        validateTeam: function (team, format) {
            var sashCount = 0;
            var problems = [];
            for (var i = 0; i < team.length; i++) {
                if (team[i].item === 'Focus Sash') sashCount++;
                if (sashCount > 1) {
                    problems.push('You are limited to one Pokémon with the item Focus Sash.');
                }
            }
             if (team.length > 4) problems.push('You may only bring up to four Pokémon.');
            return problems;
        },
        onBegin: function () {
            this.p1.pokemon = this.p1.pokemon.slice(0, 2);
            this.p1.pokemonLeft = this.p1.pokemon.length;
            this.p2.pokemon = this.p2.pokemon.slice(0, 2);
            this.p2.pokemonLeft = this.p2.pokemon.length;
        }
    },