TROY, N.Y. – After taking the first game of the day 3-0, freshman Evan McDowell sent the Rensselaer Polytechnic Institute (RPI) softball team home with another weekend sweep. She capped the afternoon with a walk-off grand slam in extra innings to give the Engineers a 7-3 victory in game two over the Clarkson University Golden Knights. With the win, RPI improves to 19-5 overall and 4-0 in Liberty League play, while Clarkson falls to 12-10 and 2-2 in league action.