Complex sentence: Michael Westphal (February 19,1965 in Pinneberg--June 20,1991 in Hamburg) was a tennis player from West Germany, who participated for his native country in the 1984 Summer Olympics, making it as far as the quarterfinals.
Split into simpler sentences: Michael Westphal (February 19,1965 in Pinneberg--June 20,1991 in Hamburg) was a tennis player from West Germany. Westphal participated for his native country in the 1984 Summer Olympics, making it as far as the quarterfinals.