You can bid on this Babe Ruth “Bat Penis” photo, if you want. Or just go look at Lou Gehrig’s balls for free.

Babe Ruth signed his first professional contract 100 years ago today. The Sun described him as "a very hard hitter." [Retro Baltimore]

Jackie Mitchell, the 17-year-old girl who struck out Babe Ruth and Lou Gehrig, is part of baseball lore. But was it legit? The story's not so simple. [Smithsonian]