Unseeded Matt Mitchell upset Pat Cash for his first Volvo Grand Prix title, ending what he described as "five years of frustration and isolation."

"I'm the happiest man alive right now," Mitchell said after defeating 19-year-old Cash, 6-4, 3-6, 6-2, to win the $200,000 Black and Decker Indoor Championship at Festival Hall in Melbourne. Mitchell, 27, collected his biggest singles paycheck of $32,704. Cash, the No. 2 seed, won $16,352.

"My situation was that I was just trying to manage week after week, but with a victory you get a renewed interest in the sport and you work harder to gain more successes," said Mitchell . . . .

Top-seeded Jimmy Connors and Ivan Lendl advanced to the final of the $375,000 Seiko tournament in Tokyo. Connors beat Andres Gomez, who made numerous net errors, 6-3, 6-2, while second-seeded Lendl, the defending champion, stopped Ramesh Krishnan, 6-2, 6-4.

Connors now has won five of his six meetings with Gomez . . . .

Steffi Graf, 15, stopped Andrea Leand, 7-6, 1-6, 6-3, in reaching the final of a $150,000 Virginia Slims tournament in Filderstadt, West Germany. Catarina Lindqvist gained the final with a 6-4, 6-3 decision over Terry Phelps.