Just walk arround against Ryo Sakazaki and don't jump, he'll walk very close to you, do something before he throw you.
Combos for Clark in KoF'97:
Clark do not have any nice combos!
AI of Clark in KoF'97:
Clark's Back Breaker and normal moves have super priority.
Therefore, he tends to "protect" himself by these moves.
If you don't do serious thing to him. He'll be very kind to you.
Fighting Style of Clark in KoF'97:
As a thrower, he should walk around on the ground and try to throw you opponent up the sky.
Roll a little bit more to avoid attack.