Third-year pro Kenny Knox trusts the advice of his caddie. He'd better. His wife Karen is carrying his big 40-pound golf bag this week, and in every PGA tournament he plays in.

"I don't really feel that tired right now," Karen Knox said, after her husband shot his second straight 74. They were both anxiously eyeing the scoreboard to see if he made the 36-hole cut. Knox, from Tallahassee, missed the cut by a stroke.

"This is a hard golf course to walk, It's hilly and long," added Karen. "It really depends on how he plays. If he makes a lot of birdies, I just trot along. When he's struggling, I'm struggling."

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Richard Zokol scored a hole in one on the 188-yard 12th hole using a four-iron in the opening round. Zokol and fellow Canadian pro Jim Nelford experimented in past seasons by wearing radio headsets beaming soothing music while golfing. No radios were in evidence this week.

Steady rain did not prevent the start of the second round on schedule at 7:30 yesterday morning. "Rain in itself does not constitute a reason to suspend play," said Steve Rankin, PGA Tour director of public relations. "If you were going to suspend play, it would be because the golf course has been made unplayable as a result of prolonged rain, for example, standing water on greens or in bunkers."

A team was dispatched to squeegy water off some of the greens. "If you get lightning, we stop immediately," Rankin added.

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Bill Sander, after shooting an opening 72, did not appear for his 12:08 p.m. tee-off time yesterday and was disqualified. Sander, 1976 U.S. Amateur champion from Seattle, told PGA officials he thought his tee off time was 12:38, not 12:08.

Former Frederick pro Donnie Hammond shot 36 on his final nine holes for 74 -- 143 and easily made the cut of 147. Tony DeLuca of Vienna also made the cut, 74 -- 147.

Washington-area players missing the cut were: Tony Milam 73 -- 148, Woody FitzHugh 76 -- 148, amateur Marty West 77 -- 150, George Graefe 76 -- 154, Wayne DeFrancesco 79 -- 155, Gary Marlowe 79 -- 158, amateur Buddy Peoples 82 -- 158, Lon Kinney 80 -- 162 and Mike Ahrnsbrak 78 -- 163.