Maybe no groundhog, but Baltimore's Orioles barge onto the 1983 capital scene today. Making way for the Redskins parade, National Press Club scratched a scheduled luncheon appearance of the Orioles' new manager, Joe Altobelli. But Altobelli, no way to go but up since his fall from the head-table platform at a Baltimore banquet, comes on down to meet the media at the Touchdown Club at 4 p.m., entourage including players Eddie Murray, Al Bumbry and Ken Singleton . . . Murray is one of 15 nominees for the 13th annual Roberto Clemente Award to a major leaguer who best exemplifies the game on and off the field (ex-Oriole Doug DeCinces is another) . . . And Chuck Thompson maybe can bring along his newest teammate on the Orioles radio network, Jon Miller. Miller leaves the Boston Red Sox play-by-play crew to replace the late Bill O'Donnell . . .

Final count on major leaguers filing for pay arbitration was 83, of whom, says Ray Grebey of the Player Relations Office, "probably between 20 and 30" will not have settled meantime and will have judgment between Feb. 5 and 24 . . .

The Phillies' president, Bill Giles, fields barbs over a roster that now has two 41-year-olds, two 39ers and two 38ers--"The Big Dead Machine" (with Rose, Morgan, Perez reunited); the real Veterans Stadium, etc.--but points to an underlying youth movement: "Our master plan is to be the 'Wheeze Kids' in 1983 and '84, and the Whiz Kids again in 1985."