Very simple backbone sorted collection by two fields. Simplified version of https://gist.github.com/nordyke/1524046#file-multisortcollection-js-L44

sortByTwoFields.js

//Original code https://gist.github.com/nordyke/1524046#file-multisortcollection-js-L44
function sortAthletes(athletes){
            //points is the first criteria
            //we sort athletes by points and make a group for all wich have the same points
            var sortedGroups = _(athletes.models).chain().
                    sortBy(function (model) {
                        return -model.get('points');
                    }).
                    groupBy(function (model) {
                        return -model.get('points');
                    }).
                    toArray().
                    value();

            //time is the second criteria
            //now we sort the point's sorted groups by time
            //those that have the same points (group) will be compared by their time
            _(sortedGroups).each(function (modelSet, index) {
                sortedGroups[index] = _(sortedGroups[index]).sortBy(function(athlete){
                    return athlete.get('time');
                });
            });

            //we put the groups on a plain json version
            return new BaseCollection(_(sortedGroups).flatten());
}