You're a high school track fan and you're with a few of your friends who also like to spend Saturdays watching a good invitational.

Then the discussion turns to a simple question: Which record is untouchable? You know, what they once said about the 4-minute barrier before Roger Bannister or Bob Beamon's 1968 world record in the long jump.

The old adage, "records are made to be broken," is very true. But there are some that are a little more vulnerable than others. In developing events like the girls pole vault or the boys discus, every few years there are newcomers who place their names atop the list knowing full well it won't last forever.

How about the Top 10 most difficult? It's just an opinion, but here goes:

1. Boys shot put (81-3½, Michael Carter, Dallas Jefferson, Texas, 1979)
If you were in Sacramento, Calif., when Carter unleashed that toss, your first thought was pretty simple — would the 12-pound shot land on the track? It was that monstrous of a throw. Carter, who would go on to win a silver medal in the 1984 Olympics before embarking on an eight-year career in the National Football League, has nine of the Top 10 throws ever. Only Fallbrook (Calif.) thrower Brent Noon, who hit 76-2 in 1990, breaks up Carter's dominance. Noon was a superb shot-putter but physically, he was no match for the athletic, taller, stronger Carter.