SYDNEY, Australia (AP) _ Former Villanova star Dwayne McClain signed a contract today with the Sydney Kings of the Australian National Basketball League.

McClain, who played 45 games with the Indiana Pacers in the 1985-86 season, spent three seasons in the Continental Basketball Association and played this season in the Philippines.

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ORLANDO, Fla. (AP) - Brent Pease threw two touchdown passes and caught another as the Birmingham Fire defeated the Orlando Thunder 31-6 in the World League of American Football.

Pease was 8-for-15 for 171 yards and caught a 15-yard touchdown pass from wide receiver Stacey Mobley. Willie Bouyer had four receptions for 141 yards, including 21- and 87-yard touchdowns.

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BAKERSFIELD, Calif. (AP) - Right-hander Don Vidmar of the Palm Springs Angels threw a no-hitter, beating Bakersfield 2-0 in the opener of a California League doubleheader.

Vidmar (1-2) struck out three and walked two in Sunday's seven-inning game.

In his third professional season, Vidmar played collegiately at Grand Canyon College in Arizona and was selected by the California Angels in the 35th round of the 1988 free agent draft.

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SASKATOON, Saskatchewan (AP) - The fledgling Continental Hockey Association has awarded a franchise to Atlanta for the 1991-92 season.

''We are pleased to have Atlanta join the CHA,'' league president Bill Hunter of Saskatoon said in a statement released Sunday. ''Atlanta proved to be a solid NHL franchise in the past and the new owners are pleased with the enthusiasm, excitement and support already being generated on the expectation of major league hockey returning to Atlanta.''

Greg Wakeham and Joe Ardagna, who own a successful restaurant chain in the Atlanta area, are the owners of the new team.

Bill Putnam, executive director of the new league, was instrumental in setting up the Georgia franchise. Putnam, a former president of the NHL's Atlanta Flames - which moved to Calgary in 1980 - and of the Philadelphia Flyers, said negotiations were going ahead for the team to play in the Omni.

Atlanta joins franchises in Saskatoon and St. Paul, Minn.