The Patey brothers, Doug and Larry, will participate in a hockey game together for the first time this afternoon when the Washington Capitals and St. Louis Blues clash at Capitial Centre at 1:30.

Rookie Doug, who turned 20 on Dec. 13, is in his first year of pro hockey as a right wing for the Capitals. He has collected three goals and one assist while seeing limited duty in 32 games.

Larry, a 23-year-old center, broke into the NHL with California in 1974, then was traded to St. Louis in 1975 for Wayne Merrick. A 25-goal scorer with California two years ago, Larry is on a similar path this season, recording 15 goals and eight assists in 37 games.

Because of the three-year difference in age, the Pateys have never before played together, either on the same or opposing teams, in their hockey careers.

Neither club figures to be brighteyed in this first of series of five Sunday afternoon games at Capital Centre. The Capitals played in Toronto last night and their charter was cheduled to land at Baltimore-Washington Airport at 1:30 this morning. The Blues, who where home to Minnesota, were due for a 2:30 a.m. arrival.

This is the teams' first meeting of the season. All eight earlier games were won by the Blues, who compiled a 45-13 scoring edge.