Complex sentence: Central defence player Álex Mendoza, from C.D. Universidad de El Salvador, lost the chance to represent his country in the 2011 Copa Centroamericana when he suffered a knee injury and could not recover in time.
Split into simpler sentences: Central defence player Álex Mendoza, from C.D. Universidad de El Salvador, was taken his possibility to represent his country in the 2011 Copa Centroamericana. He suffered a knee injury and could not recover in time.