Former Maryland golf captain George Burns, Rex Caldwell, Gil Morgan and John Fought each shot 70 to share first place in the Kemper Open pro-am yesterday at Congressional. Each earned $581.25.

Pro Jim Colbert teamed with amateurs Mike Graham, Gregory Liemandt, Joseph Flammio and Bob Clark for net 56 to win the team prize. Colbert won $750.

Defending Kemper Open champion John Mahaffey shot a 74 -- not enough to turn any heads but enough to leave him relaxed and fairly pleased with the way he was hitting the ball.

"Pro-am day is a day to meet some nice people and promote the game of golf," Mahaffey said.

Among the 208 amateurs playing with 52 PGA pros were 15 congressmen, headed by House Speaker Tip O'Neill.

Also playing was Redskin quarterback Joe Theismann, who told PGA player Gil Morgan: "The way you guys play is disgusting. You never get to see the scenic areas of the course."

Theismann, who claims to shoot "in the low 80s" at Westwood in Vienna, played yesterday with Chi Chi Rodriguez. "We may mouth each other to death," he said. Theismann finished with an 83.

Last year Theismann played in the pro-am with Tom Watson. "I play in front of 50,000 people at RFK Stadium and it's no problem. On the first tee last year, with all those people looking at me, I was never more scared in all my life. I enjoy golf but in about two weeks I'll be throwing the football."

Watson played yesterday without regular tour caddy Bruce Edwards, who pulled out when he learned of the death of his girlfriend's father. Bill Leahey, Watson's new caddy, drove here early in the morning from Philadelphia.

Tickets for the Kemper each day will be priced at $12 for grounds only, and $22 for grounds and clubhouse. Youths under 16 get in for one-half price for grounds only when accompanied by an adult.