The league defines itself as semi-professional, but five of its eight charter teams will be fully professional.

The Flyers are an original charter team of the now-defunct Golden Baseball League.

The Outlaws, Flyers and Scorpions are the remaining charter teams still active in the league today.

This freed each of the eight charter teams from having to pay salaries for up to seven players.

One of the charter teams announced that day was an unnamed Kansas City franchise.

In this draft, all eight of the league's charter teams took turns selecting available recent college graduates, semi-professional and/or professional players.

The league started the 2010 season with eight teams, as one charter team, the Los Angeles Sol, folded and two new teams joined.

One of the charter teams for the league would be placed in New York.

This meant that each charter team was freed from having to pay salaries for up to seven players.

Three of the four charter teams retained their ownership from the previous year, though some sold portions of their teams to minority owners.