Complex sentence: Singh turned professional in 1993 and his first professional win came in the same year at the 1993 Southern Oklahoma State Open, a minor local event, but he played mainly in Asia, where he was a regular winner in the mid- 1990s.
Split into simpler sentences: Singh turned professional in 1993 and his first professional win was at the 1993 Southern Oklahoma State Open, a minor local event. He played mainly in Asia, where he was a regular winner in the mid- 1990s.