The U.S.-Soviet Washington Summit moves to the soccer field today when the Washington Diplomats play one of the Soviet Union's best professional teams, Dynamo Moscow, at RFK Stadium.

President Bush and Soviet President Mikhail Gorbachev declined invitations to the 6:30 p.m. match, the last in a four-game North American tour by the Soviet club.

Dynamo Moscow, currently in first place in the Soviet Union's Premier Division, defeated a New York all-star team and the American Soccer League's Boston Bolts, 2-0, last week.

This tour marks the first time Dynamo has played outdoors against U.S. teams in this country. In 1987, the Soviets played six exhibition matches here against Major Indoor Soccer League teams.

Igor Dobrovolsky, a 22-year-old midfielder, skipped this trip to play for the Soviet national team that is preparing for this month's World Cup finals in Italy.

Goalkeepers Dmitri Kharin and Andrei Smetonin, defenders Victor Losev and Igor Skliarov and forward Igor Kolyvanov have trained with the national team recently but are expected to play against the Diplomats.

Dynamo Coach Anatoli Byshovets guided the Soviet Olympic team -- which included Kharin, Losev and Skliarov -- to the gold medal in 1988.

The Diplomats, a Southern Division entry in the 3-year-old ASL, have a 4-3 record after last Sunday's 1-0 loss to the last-place Orlando Lions. In that game, Soviet Alexander Golovnya, a midfielder for Dynamo Moscow in 1980-87, scored the only goal in the second half.

In the first exchange of its kind between U.S. and Soviet professional leagues, American Dale Mulholland of the Lions went to play for Lokomotiv Moscow this spring.