Baseball

the 8-ball walk and the "stolen base" rule.

The 8-ball walk was dropped to only 4 balls, obviously. But the stolen base rule once had taking an extra base count as a steal. To clarify, if a runner went from first to third on a single, his going beyond second safely was credited as a stolen base.

This is why when Lou Brock broke Ty Cobb's stolen base record of 892, Cobb was the official record holder instead of Billy Hamilton (1800s base thief), who had 912--but included taking those extra bases.