Anthony Joshua is back in the gym less than a week after beating Andy Ruiz Jr, prompting speculation that the heavyweight king’s next fight is just around the corner. The Brit reclaimed the world titles that he lost to the Mexican-American in June with a unanimous point decision in the Saudi Arabian capital Riyadh at the weekend. At the end of another grueling year and with Christmas just around the corner, the 2012 Olympic champion would have been forgiven for taking a break from the sport after his latest win. Instead, the...