Complex sentence: Gregory demonstrated excellent leadership skills on and off the sporting field during the long tour, while the star player of the team turned out to be Fred Spofforth, who cricket scholars consider to have been one of the greatest fast bowlers in the history of the game.
Split into simpler sentences: Gregory demonstrated excellent leadership skills on and off the field during the long tour, while Fred Spofforth became the star performer of the team. Cricket scholars consider him to have been one of the greatest fast bowlers in the history of the game.