Complex sentence: The first Paraguayan rugby player of note was Nelson Ayala, who played with the English club Saracens F.C. in the 1950s, and also played a prominent part in developing the game in his home country.
Split into simpler sentences: The first Paraguayan rugby player of note was Nelson Ayala who played with the English team, Saracens F.C. in the 1950s. He has played a prominent part in developing the game in his home country.