I was crewing on a J22 in the MD Governors Cup race down the Chesapeake. It was after midnight, cloudy and we had 20 knot winds on the nose and 4 to 5 foot chop. We were on a long port tack heading straight down the Bay. Me and three others were on the weather rail in full foulies, trying to nod off between the occasional wave that splashed over the bow. I (not knowing any better) was completely outside the lifelines. The helmsman was trying to pinch up to close, and backwinded the jib. I woke up when I felt myself no longer touching anything but the water coming up my legs as I fell in. I somehow spun around in mid air and caught hold of a shroud and pulled myself back on board.