BASEBALL American League * Orioles -- Activated Ben McDonald (pitcher) from the 15-day disabled list. Optioned Craig Worthington (third baseman) and Jose Mesa (pitcher) to Rochester of the International League.
* Boston Red Sox -- Placed Mike Gardiner (pitcher) on the 15-day disabled list. Recalled Daryl Irvine (pitcher) from Pawtucket of t e International League.
* Cleveland Indians -- Optioned Jeff Manto (infielder) to Colorado Springs of the Pacific Coast League. Recalled Reggie Jefferson (first baseman) from Canton-Akron of the Eastern League. * Minnesota Twins -- Placed Dan Gladden (outfielder) on the day disabled list. Recalled Paul Sorrento (first baseman) from Portland of the Pacific Coast League.
* Oakland Athletics -- Optioned Johnny Guzman (pitcher) to Tacoma of the Pacific Coast League. Recalled Scott Hemond (infielder) from Tacoma.
National League * Cincinnati Reds -- Placed Scott Scudder and Gino Minutelli pitchers) on the 15-day disabled list. Recalled Tim Layana and Kip Gross (pitchers) from Nashville of the American Association.
* Montreal Expos -- Optioned Bill Sampen (pitcher) to Indianapolis of the American Association. Recalled Steve Frey (pitcher) from Indianapolis.
* San Diego Padres -- Activated Ed Whitson (pitcher) from the 15-day disabled list. Optioned Tim Scott (pitcher) to Las Vegas of the Pacific Coast League.
HOCKEY (NHL) * St. Louis Blues -- Signed Adam Oates (center) to a two-year contract extension through the 1994-95 season.
* LSU -- Signed Joe Dean (athletic director) to a two-year contract extension through 1995.