US Open champion Flavia Pennetta improved to 1-1 at the elite season-ending WTA Finals on Tuesday by beating Poland’s Agnieszka Radwanska 7-6 (7-5) 6-4.
If top-seeded Simona Halep of Romania defeats Russian Maria Sharapova later on Tuesday, Radwanska will be eliminated from semi-final contention after losing her opening two matches.
