Complex sentence: He attended Westbury High School and graduated in 2002 then he later attended University of Texas at El Paso leading up to his NFL debut with the Dallas Cowboys having played few of their preseason games until he was cut from the Cowboys in late August 2007.
Split into simpler sentences: He attended Westbury High School and graduated in 2002 then he later attended UTEP. He received some playing time few of their preseason games until he was cut by the Cowboys in late August 2007.