Complex sentence: Alberto Spencer is the all-time goalscorer record of the Copa Libertadores with 54 goals, while Daniel Onega is the record top goalsocer in a single season with 17 goals in 1966.
Split into simpler sentences: Alberto Spencer is the all-time goalscorer record of the Copa Libertadores with 54 goals. While Daniel Onega is the record top goalsocer in a single season with 17 goals in 1966.