Rucinski, who will be a junior at Salesianum in the fall, led Plusch by four strokes entering the final round, but his 75 was just enough to force the extra hole which he won.
Plusch, who entered the round tied for 3rd, fired a 1-under 71 on his second and final round. He joined Nathaniel Haney as the only golfers to shoot under par Wednesday.
Samantha Leite backed up her opening round 73 with a 74 to cruise to a seven shot victory over Annika Vandayar.
Vince Cianciulli won the 13-and-under boys division by four shots.
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