Argentine tennis star Diego Schwartzman thinks Carlos Alcaraz ability to adjust his game-style to different opponents is one of the keys to his success. Alcaraz has proved capable of playing well on both hard and clay, while his first grass season will be kicked off in June. Alcaraz has won three titles this year as he captured his maiden Masters titles on the hard courts of Miami, while he won clay events in Barcelona and Rio de Janeiro. Schwartzman met Alcaraz for the first time in the Rio de Janeiro final this year. Schwartzman barely stood a ch …