first.js

const players = {itamar: 1200, eddie: 1210, eli: 1183, uriel: 1201};
const newPlayers = [];
for (var player in players) {
  if (players.hasOwnProperty(player)) {
    newPlayers.push({
      player,
      rank: players[player],
    });
  }
}
// newPlayers now contains array of objects { player: string, rank: number }
// We now need to sort by desc rank.
// But wait.. how do you sort in vanilla JS?
// fullstackoverflow development to the rescue! 
// http://stackoverflow.com/questions/979256/sorting-an-array-of-javascript-objects
const sortedPlayers = newPlayers.sort(function(a, b) {
    return parseFloat(b.rank) - parseFloat(a.rank);
});
console.log(sortedPlayers); // Done!