On Saturday, Rafael Nadal and Carlos Alcaraz will step on the court in Indian Wells for the first all-Spanish semi-final. Two Spaniards will battle for the second time after Madrid last spring, and it should be a much tighter encounter than in Caja Magica.An 18-year-old Alcaraz has made brilliant progress since August 2020, gaining almost 300 positions on the ATP ranking list and challenging a couple of Nadal’s age records. Carlos showed his full potential in the season behind us, lifting the maiden ATP trophy in Umag and reaching the first Major quarter-final at the US Open.A teenager wrapped up an incredible year with the ATP Next Gen Finals title in Milan, with much higher goals in front of him f …