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Most current leagues are all-female; however, there are some co-ed and male teams scattered about. Also, while roller derby involves a bit of racing, it's a full-contact team sport.
they don't. they pay for monthly dues, secondary insurance, skates, equipment and (on some teams) uniforms.
Liverpool and Everton.
Roller derbies take place on a circuit track. The two teams playing send five players each onto the track - three blockers (defense), one pivot (last line of defense) and one jammer (scorer). 20 people are allowed on the roster but only 14 can play in one bout.
American football teams in Montana‎ (4 C, 1 P) Baseball teams in Montana‎ (2 C, 1 P) Basketball teams in Montana‎ (3 C, 5 P) College sports teams in Montana‎ (3 C) Ice hockey teams in Montana‎ (7 P) Roller derby leagues in Montana‎ (1 P)
He helps coach with Wellington basketball association teams, and also coaches the New Zealand Junior Tall Blacks as well as helping coach the Wellington Saints.
stoke city
A sport in which 2 teams on "quad" roller skates compete. The object is to score points by passing while keeping the other team from doing just that. Unless one is referring to staged events from the 80's, It was much more brutal, but also more like pro wrestling on wheels.
Are you thinking of Roller Derby? Two teams (often women) roller skate around an oval track, removing other team members from play by causing them to fall.
Derby City Dynamite
The "Old Firm" derby is played between Glasgow Rangers and Celtic.
Clearly, just two teams close to each other geographically. A meeting between the two of these teams is called a derby.