Too late now for the Raiders, but Bronco big-play man Upchurch will miss two or three games; knee sprain from Sunday's game . . . In Cincinnati, because Charles Alexander has torn rib cartilage, the Bengals have picked up Elvis Peacock, running back dropped by Los Angeles despite two-year-total stats of 1,001 rushing yards, 4.6 per carry . . .

Basketball rover come home: 6-10 Joe Pace, a Bullet again, just signed; and why not? Without Pace since 1978, there've been no more NBA titles here. Ahem . . . New deal for Larry Brown, without whom there've been no NFC titles for the Redskins: he left the securities market "just in time" to become Xerox's area business and community relations manager. Second week on the job, he got time out yesterday to attend the Reagan-Begin ceremonies.

Dallasites weren't the only Texas visitors to RFK Sunday: Starplex boss Bob Sigholtz got an early kick out of the opener when he encountered Redskin guard Melvin Jones' parents from Houston in the stands -- at 10 a.m. Just making sure they didn't miss their son's NFL debut . . .

Walter Masterson has resigned as baseball coach at George Mason, citing not the illness that interrupted him last spring but business reasons. The new coach is Billy Brown, who played and coached at GMU under the erstwhile Senator ace. Brown will employ his brother and fellow former Marshall High athlete, Mike Brown, as his pitching coach this fall. Mike, the Clemson all-America drafted first by Boston, broke in with a shiny 14-4 this summer for the Winston-Salem Red Sox . . . But Hagerstown, 70-68 in regular season, won the Carolina League playoffs. A co-op franchise but liberally stocked with Baltimore Oriole hopefuls, the Suns came home from Hampton and their triumph over Peninsula to a rousing reception -- during which the team's orange and white road uniforms disappeared from their clubhouse . . . New coaches at George Washington: golf, Jim Fitzgerald, 24, Columbia C.C. assistant pro; men's crew, Paul Wilkins, 23, GW '80, moving up from coaching frosh.

Retirees: Hartford NHL defenseman Rick Ley, 13-year pro and last of the original Whalers, of WHA origin. Fio Rito, 6-year-old New York-bred thoroughbred, because of a leg injury incurred in Saturday's Woodward.