Complex sentence: It was in the 1988/89 season with Mountjoy being coached by Frank Callan, at the age of 46 made it to the final of the 1988 UK Snooker Championship, meeting the young pretender Stephen Hendry in the final.
Split into simpler sentences: It was in the 1988/89 season with Mountjoy being coached by Frank Callan, made it to the final of the 1988 UK Snooker Championship. At the age of 46 he was meeting the young pretender Stephen Hendry in the final.