Power/speed number
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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 |
