Complex sentence: At his peak, he was considered one of the best batsmen in the world despite playing at a time when there was very little Test cricket being played by Pakistan: just 55 Test matches in a career spanning 17 years.
Split into simpler sentences: At his peak, he was considered one of the best batsmen in the world. He played at a time when there was very little Test cricket being played by Pakistan, with just 55 Test matches in a career spanning 17 years.