William Hoy (May 23, 1862 – December 15, 1961), nicknamed "Dummy", was an American center fielder in Major League Baseball who played for several teams from 1888 to 1902, most notably the Cincinnati Reds and two Washington, D.C., franchises.Hoy is noted for being the most accomplished deaf player in Major League history, and is credited by some sources with causing the establishment of signals for safe and out calls.