Dec 17 (Reuters) - Carlos Alcaraz has split with his coach Juan Carlos Ferrero, the Spaniard said on Wednesday, ending a partnership that brought him six Grand Slam titles and world number one in the rankings.

Ferrero began coaching Alcaraz when he was 15 and guided him to several titles on the ATP Tour before he became a force to reckon with in Grand Slams, converting him from a claycourt specialist to a player who dominated on all surfaces.