Two old rivals, Cornelius Shields and Arthur Knapp, clashed in the Long Island frostbite championships. Knapp sailed beautifully to win the series but...

...the day was marred when Shields became ill (right) and was taken to the hospital after a duel with Knapp in the eighth race (see above)

Shields arrives for races at Manhasset Bay Yacht Club. Changing to sailing togs, broker frets over jammed centerboard.

Knapp arrives determined to reverse his defeat by Shields in recent Larchmont Yacht Club frostbite series (SI, April 16).

SIX PHOTOSMORRIS ROSENFELD