Transgender is also an umbrella term: in addition to including people whose gender identity is the opposite of their assigned sex (trans men and trans women), it may include people who are not exclusively masculine or feminine (people who are genderqueer, e.g. bigender, pangender, genderfluid, or agender).
Chapman holds the record for the fastest recorded pitch speed in MLB history at 105.1 mph (169.1 km/h) as well as the Guinness World Record for fastest baseball pitch for a male.
There are optimal velocities for different types of pitches. For instance, you want your change-up to be thrown at a slower speed than your fastball. Pitchers' velocities often vary. Tim Wakefield, a knuckleballer of the Boston Red Sox, for instance, has a slow fastball, clocking in the high 70s at most.