Some tickets were sold at 1966 prices, 1966 music was played on the public address system and the players wore uniforms of that year.
Oriole relief pitcher Gregg Olson didn't get into the spirit of things, though, when called upon to protect a 4-3 lead over the Minnesota Twins in the ninth inning.
Olson gave up four hits and two walks. He also threw three wild pitches and committed a throwing error as the Twins won, 8-4.
Afterward, he threw his shirt, pants, socks and then his shoes into the trash, according to the Baltimore Sun. Then, he spotted one of the 1966-vintage stirrups he had worn and trashed them, too.
"I will never, ever again wear anything associated with 'Turn Back the Clock Day,' " he said.
Trivia time: What did Magic Johnson and Marcus Allen have in common in their transition from college to professional athletics?
No overtime?: Bill Parcells, the former New York Giant coach, on the workload of NFL coaches:
"From the start of training camp, a coach will work every day now from the middle of July until after the first week in February when they hold the scouting combine," Parcells said.
"That is every single day and the average day is 12 hours. I know my average during the season was 15 hours. Name me another job in the country where you work all those days and all those hours in a row without a day off?"
Easy aces: A few weeks ago in the pro-am preceding the Kemper Open, Jay Don Blake arrived at the third tee and was asked by one of the marshals about his chances of repeating his hole-in-one performance there of the year before.
"Why not?" said Blake, who then holed a three-iron shot from 208 yards.
Last year he used a three-wood on the hole, which played 239 yards.
Living dangerously: After Doug Danger made a world-record motorcycle jump recently at Loudon, N.H., his nervous mother, Marge Whitcomb, told the Boston Globe:
"You don't raise your son to have to kill himself this way--no matter how good he is.
Danger's jump measured 248 feet 8 inches.
Add threesomes: Morning Briefing has reported on triplets in athletics. Now add the names of Lynne, Lorelei and Lisa van Benthum, who threw the javelin for the USC women's track team in the early 1980s.
Trivia answer: Each changed his jersey number from 33 to 32.
More on 32: It's a famous number that also has been worn by Jim Brown, O.J. Simpson, Sandy Koufax, Bill Walton, Franco Harris, Julius Erving, Cookie Gilchrist, Steve Carlton, Kevin McHale and Elston Howard.
Quotebook: PattiSue Plumer, on the omission of the 5,000 meters for women in the Olympic Games: "I think it's incredibly unfair. I think it's incredibly sexist. But basically the International Olympic Committee is still controlled by old sexist males in the old world."