Complex sentence: Anastasia Olegovna Pivovarova (born 16 June 1990) is a professional tennis player from Russia who reached a career high of 93 in May 2011.
Split into simpler sentences: Anastasia Olegovna Pivovarova (born 16 June 1990) is a professional tennis player from Russia. She reached a career high of 93 in May 2011.