Complex sentence: On September 10,2014, Wilpon was named as a defendant in a lawsuit by Leigh Castergine, the first female senior vice president of ticket sales in the history of the Mets.
Split into simpler sentences: On September 10,2014, Wilpon was named as a defendant in a lawsuit by Leigh Castergine. Castergine had been the first female vice president in the history of the Mets.