The first "professional" baseball team, the Cincinnati Red Stockings, were formed in 1878, however, baseball "leagues" were in existence a few years earlier. A "professional" league, the National League was formed in 1876, and baseball records begin that year.
Nippon Professional Baseball Rookie of the Year Award was created in 1950.
Ohio. The Cincinnati Reds are recognized as the first all professional baseball team.
the first year of the all american girls professional baseball league is in 1998
Nippon Professional Baseball Comeback Player of the Year Award was created in 1974.
a baseball player gets paid at least 60,000,000 a year
All-American Girls Professional Baseball League Player of the Year Award was created in 1945.
According to mlb.com: "Professional umpires currently begin their Minor League career at $1,800 per month. At the Major League level, salaries range from approximately $84,000 to $300,000 per year."