sortNumerically.js

// We create an object of the specific divs we want to sort
var games  = jQuery('.future-games-box .single-game-listing-box');

// then we create a function to 
var orderedDivs = jQuery(games).sort(function(a,b){
  
  // We are targeting the text, which is a date, inside of the 
  // <p></p> that is inside of the div .single-listing-box
  return jQuery(a).find("p").html() > jQuery(b).find("p").html();
  
});
jQuery(".future-games-box").html(orderedDivs);