USA had some of their best teams pre-2000

1968 track and field in Mexico City, best example Bob Beamon long jump which was a world record from 1968 to 1991

1972 men's swim team in Munich, best example Mark Spitz, 7 gold medals (4 ind, 3 relay)

added: The current men’s long jump world record is held by Mike Powell of the United States, with a distance of 8.95 meters (29 ft 4+1⁄4 in), set on August 30, 1991, at the World Championships in Tokyo.

Prior to Powell’s record, Bob Beamon held the world record for 23 years, with a jump of 8.90 meters (29 ft 2.5 in), set at the 1968 Mexico City Olympics. Beamon’s record was achieved at high altitude, but the IAAF considers marks set at high altitude as acceptable for record consideration.

Bob Beamon world record 1968 to 1991 Mike Powell world record 1991 to present