Complex sentence: O'Shaughnessy received his Lancashire cap in 1985, but he had a disastrous summer so far as first-class cricket was concerned: in 23 innings he passed 50 only once, and his average was barely 13.
Split into simpler sentences: O'Shaughnessy received his Lancashire cap in 1985, but he had a disastrous summer in first-class cricket. In 23 innings he passed 50 only once, and his average was barely 13.