"submarine pitcher"(baseball) 1922

[Sam Clements]

I'm not sure it this antedates anything, as I don't know where to find a
cite other than this one.

10 Aug. 1922  _Witchita(KS) Daily Times   "part 1"/1

<<For the first four innings and the last four, the vaunted attack of the
Giants was chained up by the underhand giants of Carl Mays, the blonde
submarine pitcher of the Yanks.<<

Evidently, the term "underhand" in referring to a style of pitch at this
time, was actually a "submariner" or a pitcher who delivered the pitch from
a low, sidearm motion.  He was, in no way, throwing a pitch 'underhanded' as
might be delivered in softball.

SC