Milan Srejber of Czechoslovakia upset fourth-seeded Joakim Nystrom of Sweden, 6-2, 6-7, 6-1, Tuesday in the first round of the $300,000 Benson and Hedges tournament at Wembley, England.
There was first-round success, too, for Alexander Volkov of the Soviet Union, who defeated Peter Fleming, 6-2, 4-6, 6-2, to set up a likely second-round meeting with top-seeded Ivan Lendl.
Lendl, the world's No. 1 player, plays Ronald Agenor of Haiti today.
Another Soviet, Andrei Chesnokov, also make it to the second round by eliminating Mikael Pernfors of Sweden, 6-3, 7-5.
Anders Jarryd of Sweden beat Guy Forget of France, 6-4, 6-3; Henri Leconte of France defeated Kevin Curren, 6-3, 7-6, and Rick Leach ousted Tomas Smid of Czechoslovakia, 3-6, 6-3, 6-3, in other matches.
It took Martina Navratilova only 38 minutes to defeat Catherine Suire of France, 6-0, 6-1, in a first-round match of a $150,000 Virginia Slims tournament at Chicago.