BASEBALL American League * Boston Red Sox -- Placed Danny Darwin (pitcher) on the 15-day disabled list.
* Toronto Blue Jays -- Placed Al Leiter (pitcher) on the 15-day disabled list, retroactive to April 21. Recalled Willie Fraser (pitcher) from Syracuse of the International League.
National League * Philadelphia Phillies -- Fired Nick Leyva (manager). Named Jim Fregosi manager. Recalled Mickey Morandini (second baseman), Jim Lindeman (outfielder) and Danny Cox (pitcher) from Scranton-Wilkes-Barre of the International League. Released Dave LaPoint (pitcher). Sent Wes Chamberlain (outfielder) and Dave Hollins (third baseman) to Scranton-Wilkes-Barre.
BASKETBALL (NBA) * New York Knicks -- Named Ernie Grunfeld director of player personnel.
FOOTBALL (NFL) * Buffalo Bills -- Signed Lionel Manuel (wide receiver).
* Chicago Bears -- Signed Eric Ihnat (tight end) to a two-year contract.
* Detroit Lions -- Signed Greg Jones (quarterback).
* Kansas City Chiefs -- Signed Eric Hoskins (defensive back).
* New York Jets -- Signed Jim Scully (linebacker).