US Open champion shares image of manga character she inspired.
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.