Arno Steffenhagen and Peter Lorimer scored for Vancouver during the shootout tonight, leading the Whitecaps to a 1-0 victory over Team America in a North American Soccer League game before a crowd of more than 26,000.

It was the seventh straight defeat for Team America and the 11th victory in 12 games for the Whitecaps.

Steffenhagen, purchased from the Toronto Blizzard this week, scored with a low right-footed shot into the corner of the net, easily beating advancing goalie Arnold Mausser.

Vancouver goalie Tino Lettieri equaled a club-record with his 10th shutout of the season; Phil Parkes set the mark in 1978. In the shootout, Littieri stopped shots by Boris Bandov and Pedro DeBrito and forced Dan Canter and Perry Van Der Beck to shoot wide.

The Whitecaps' second victory in four days over Team America earned them six points for a season total of 148--23 more than the Cosmos in the overall standings. Vancouver improved to 19-4 and leads the Western Division; Team America is 8-12 and in last place in the Southern Division.

The Whitecaps controlled the game throughout, but were unable to penetrate the solid defense of Team America during regulation and overtime play.

In other NASL games tonight, Seattle ended a six-game losing streak by defeating visiting Tulsa, 3-1; goalie Bill Irwin blocked six of eight shots during the shootout to lead Golden Bay over host Montreal, 4-3, and San Diego beat visiting Fort Lauderdale, 3-1.