Coaching comes from a new smart tennis wristband.
Karolina Pliskova has begun working with coach Sascha Bajin.
Fabio Fognini has hired former world No. 8 Alberto Mancini as new coach.
Former No. 1 says taking vaccine should be mandatory for good for the tour.
The 20-year-old Canadian is putting in the hard yards in the south of France.
The Austrian joins Roger Federer in the Boston edition of the event.
US Open champion on why 2021 could be the most exciting of tennis time.
