The Atlantic League has had more marquee players than any other independent league, including José Canseco, Rickey Henderson, Ozzie Canseco, Rubén Sierra, Carlos Baerga, and John Rocker.
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Northern League of Professional Baseball, the seventh incarnation of an independent baseball league in the United States founded in 2013.
Reunion Sports Group is an investor group which owns United League Baseball, an independent baseball league started in 2005.