By Magdalena
Stanislav
 |
| Maria Sharapova keeps her cool to stay in the hunt. |
ISTANBUL, Turkey
(TheSportsNEXT) October 25, 2012: Maria Sharapova of Russia stayed upright
in a nerve-wrecking match against Agnieszka Radwanska to storm her way into
semi-finals of the TEB BNP Paribas WTA Championships in Istanbul on Wednesday.
