Melissa Mayeux, a 16-year-old French shortstop, has become the first known female to be added to Major League Baseball’s international prospect registration list, writes MLB.com’s Lindsay Berra. That would make Mayeux, who plays for the U-18 French junior national team, eligible to sign with a Major League club on July 2. As Berra goes on to explain, only players that at least have a chance to be signed by a Major League team are typically registered. It still seems unlikely that Mayeux will be signed, Berra continues. European prospects typically sign at the age of 18, as opposed to 16, as is often the case with Latin American prospects.