Complex sentence: In the 1950--51 season Zarra able to beat one of his greatest records marking 38 goals in 30 league games, a figure only achieved by the Mexican Hugo Sánchez, but the latter succeeded in 38 matches.
Split into simpler sentences: In the 1950--51 season Zarra able to beat one of his greatest records by scoring 38 goals in 30 league games. This record was also achieved by the Mexican Hugo Sánchez, but he scored his 38 goals over the course of 38 matches.