Spanish teenager will join 56-player field in Madrid Masters.
The LTA is hopeful fans will be permitted to return to grass-court events in June.
With spectators reduced, the tournament has had to shrink its prize money pool.
World No. 1 Novak Djokovic showed his mental strength is a major weapon, says Toni Nadal.
"When he gets that little step slower he will not be the same player," Boris Becker says of Rafael Nadal.
Dancing days are here for Garbine Muguruza.
Australian Open final reinforced a fundamental fact, says former world No. 1.
