His groundstrokes are solid on both wings , with a heavy forehand and a tenacious , powerful single - handed backhand .
Thiem is primarily an aggressive baseline player , who is adept at defending , as well .
Thiem 's groundstrokes are solid on both wings , with a heavy forehand and a tenacious , powerful single - handed backhand .
Thiem is primarily an aggressive baseline player , who is adept at defending , as well .