Complex sentence: In the 2010 WPS Draft O'Sullivan was allocated to Chicago Red Stars, but after attending their preseason training camp, she was released from the initial 26--player roster in March 2010.
Split into simpler sentences: In the 2010 WPS Draft, O'Sullivan was allocated to Chicago Red Stars. However, after attending their preseason training camp, she was released from the initial 26--player roster in March 2010.