Nick Kyrgios’ planned return to Grand Slam tennis at the Australian Open is in doubt after he sustained an abdominal injury and was forced to withdraw from an exhibition with Novak Djokovic this week.

There is little doubt Carlos Alcaraz is one of the brightest stars of his generation with Grand Slam success on all three surfaces but the Spaniard will arrive at the Australian Open looking to conquer the final frontier of his young career.

Carlos Alcaraz has already proven himself one of the brightest stars of his generation, capturing Grand Slam titles on all three surfaces. Now,