Center Guy Charron and defenseman Robert Picard were double winners last night as the Washington Capitals distributed awards to outstanding players before the season finale against Atlanta at Capital Centre.

Charron was chosen the most valuable player by management. He also was honored for the second straight year as the team's leading scorer, entering the game with an unbeatable 73 points, on 38 goals and 35 assists.

Picard was selected rookie of the year in a vote of the players. He also was chosen the outstanding defenseman by the media, in a close contest with Bryan Watson.

Right wing Bob Sirois was named most improved player by his teammates in another close ballot, edging right wing Mike Marson and defenseman Gord Lane. Sirois went into last night's game with 24 goals and 36 assists, after only 13 goals and 22 assists in an injury-plagued 1976-77 season.

Charron was likely to receive a third prize, as he led goalie Jim Bedard by three points in the three-star voting, based on the star selections at all home games. Charron nipped Gerry Meehan by one point for that prize a year ago.

Additional awards, including one to the most popular player, will be presented by the fan club at tonight's postseason banquet at the Bolling Field Officers Club.