An X-ray showed a possible tear in his anterior cruciate ligament, but no broken bones.
Lye was following the Arnold Palmer/Jay Haas-Gary Player/Mark McNulty match when the incident occurred on the second hole at the Cassique Course.
I was looking down at Arnolds ball to see where it was and what kind of shot he had and then I must have stepped on something -- a sprinkler head. My knee locked and snapped and I went down, Lye said.
Lye said doctors would not authorize an MRI since it was not considered an emergency, so he will have to wait until Monday when he can see his doctor in his home of Naples, Fla.
It doesnt look good, he said. It could be the ACL, it could be torn cartilage, it could be nothing. But judging by the size of the swelling and the pain -- I don't know.'
Lye was fitted with an air cast and expects to make the 11-hour drive from Kiawah Island to Naples over a two-day trip, due to the pain.
Lye has twice beaten cancer in his left leg. He was diagnosed with cancerous melanoma outside his left knee in 1991 and had a tumor in his left thigh removed 11 years later.
He had emergency gall bladder surgery in May. His wife, Lisa, had a cancerous tumor removed from her cheek in June.
'With what we've been through,' said Lye, 'we're just hoping for the best.'
This injury could hamper the 52-year-olds playing time on the Champions Tour in 2005. Lye, who is partially exempt on the senior circuit thanks to his 1983 Bank of Boston Classic win on the PGA Tour, hoped to play more next season. He competed in 12 tour events this year, earning one top-10 finish, while also working as an on-course reporter and analyst for The Golf Channel.