Chuck Finley and Randy Johnson combined to pitch a no-hitter and Greg Olson hit a three-run homer, giving the U.S. major league all-stars a 5-0 victory over their Japanese counterparts yesterday in the final game of their exhibition series.

The series ended with Japan winning four games, the United States three and one tie.

Olson, the Atlanta Braves' catcher, smashed his first homer of the series in the second inning against Hideo Nomo of the Kintetsu Buffaloes, rookie of the year in Japan's Pacific League. Nomo, 18-8 this season, had the league's best ERA (2.91) and struck out 287.

Olson's homer came after Ken Griffey Sr. of the Seattle Mariners singled and Kelly Gruber of the Toronto Blue Jays had an infield hit.

Finley, of the California Angels, struck out five and walked three in five innings. Johnson, of the Mariners, struck out four and walked two in four innings. Johnson pitched one of the major leagues' nine no-hitters in 1990. . . .

Two of Darryl Strawberry's former New York Mets teammates claim the outfielder began drinking again late last season, less than six months after rehabilitation for alcohol abuse, according to a report in Newsday. A pair of Mets players -- not identified -- told the newspaper that Strawberry drank beer in the clubhouse and took hard liquor to his hotel room on road trips.

Agent Eric Goldschmidt, who negotiated Strawberry's five-year, $20.25 million contract with the Los Angeles Dodgers last week, denied the allegations.

Mets General Manager Frank Cashen said he had heard talk about Strawberry drinking, but said, "I never asked him directly."