Power/speed number

Bill James invented the Power/Speed Number, a single figure to quantify the idea expressed in the "40-40 club" or the "30-30 club" and other combinations of stolen bases and home runs.

The formula is 2(HR x SB)/(HR + SB). James himself has referred to this as a "freakshow" stat with little analytical value.

All Time Leaders
Span	Player	Total	Notes
Career	Barry Bonds	603.17
Season	Alex Rodriguez	43.91	1998

See also

• 300-300 club

Further Reading

• Andrew Simon: "40-40? We could see something even more rare", mlb.com, August 17, 2023. [1]

Related Sites

• Power/Speed number article