The Bullets have summoned the media to the Sheraton Northeast at high noon today for "a player signing," and that may be the tipoff on how high Washington's NBA team is on forward Steve Lingenfelter, now that he has a year under his belt in the Italian pro league.

Real surprise if the 1981 second-round pick from South Dakota State is not trotted out as the might-be Jeff Ruland type surprise of '82 . . .

Surprisewise, Landon grad Ken Jenkins of Wheaton drew "Good little football player--he's looked good in those open-field type situations" appraisal from Coach Dick Vermeil after Philadelphia Eagles' intrasquad scrimmage. The 5-9, 183-pound free agent out of Bucknell, where he led NCAA Division I-AA in all-purpose yardage in 1980, showed how with 47-yard touchdown catch and 50-yard punt return . . . Renaldo Nehemiah, ex-Maryland world hurdling champ in 49ers camp, dropped the first three passes thrown to him. "I tried to move with the ball before I made sure I caught it," said the admittedly nervous Skeets. Don't worry about it, said his coaches, and he settled down . . .

Tragedy in Oak Hollow World Drag Boat Championships, High Point, N.C.: Julian Kirk, 45, of Richmond, fatally injured in a crash at about 120 mph. Thrown forward when his 17-foot craft suddenly dipped, then pulled backward when his emergency parachute opened, severing his spinal column. Kirk was a telephone lineman by trade . . . Triumph in Europa Cup whitewater paddling: David Hearn of Garrett Park leading U.S. men's singles canoe sweep. Series of three races in Yugoslavia, Austria, West Germany, finale Saturday at Augsburg. Hearn first American to win it; team, also including Jon Lugbill of Fairfax, Kent Ford III sometimes of Chevy Chase, swept canoe class. Cathy Hearn third in women's kayak.

Henry Aaron, fresh from RFK triumph, on to bigger things: a bronze likeness of Hank hammerin' homer No. 715 to be dedicated Aug. 21 at Atlanta Stadium, home of the Braves. Culmination of a year of sometimes controversial raising of $72,000 for statue, $6,000 for pedestal, $7,000 for shipping, lighting, installation . . . Thigh-slapping Kevin Saucier, early-season Tiger sensation, to lesser--Evansville--to rediscover control (not self-control) . . .

Tonight at 9, D.C. Coaches Association assembles an all-star alumni banquet at Last Hurrah Supper Club, 22nd and R streets NW. A prelude to its 14th annual all-star football game 8 p.m. Friday in RFK Stadium, showcasing Interhigh talent . . .

Amateur boxing takes stage Wednesday, 8 p.m., host Hillcrest Heights Boys Club billing the card "Battle of the Cities--Hillcrest Heights vs. Washington metro area." Main event: Mark Pringle, 132-pound Golden Gloves lightweight champion, vs. Rick Carey of Palmer Park. "Semi" main event: Linwood Porter, a Sugar Ray Leonard cousin, of Hillcrest vs. Eugene Speed, Palmer Park. Thumbless glove developed by Jhoon Rhee to be demonstrated, too.

And then the Bullets . . . slated orientation and tryout session for the dancing, cheerleading Bullettes (minimum age, 18); tonight at 7, Capital Centre.