Simplify the following text for a Grade 8 native English-speaking person.
Original: Denton True `` Cy '' Young ( March 29 , 1867 â `` November 4 , 1955 ) was an American baseball player who was a pitcher for five different professional baseball teams from 1890 to 1911 .
Simplified: Denton True `` Cy '' Young ( March 29 , 1867 â `` November 4 , 1955 ) was an American Major League Baseball pitcher .