Tennis ace Martina Navratilova to return to the game as a super coach . The 58-time grand slam winner will coach Agnieszka Radwanska in 2015 . The world No . 1 hopes Navratilova will help her win a first grand slam title . ` ` I ' m really excited , '' says Navratilova about her new role .
Tennis ace Martina Navratilova to return to the game as a super coach . The 58-time grand slam winner will coach Agnieszka Radwanska in 2015 . The world No . 6 hopes Navratilova will help her win a first grand slam title . `` I 'm really excited , '' says Navratilova about her new role .