Multi-Olympian Eventer Joins Kenny Rice for Coverage of the  Rolex Grand Slam of Show Jumping The Plains, Virginia, USA. August 6, 2014.  Multi-Olympian Karen O’Connor will be providing the expert commentary for NBC’s coverage of the Rolex Grand Slam of Show Jumping from Aachen.  The program will air on the  NBC Sports Network  on Saturday, August 9, 2014 from 6-7pm Eastern.  O’Connor joins veteran sportscaster Kenny Rice, who provides the play-by-play commentary of the action from the Aachen Grand Prix