Complex sentence: With their superior depth, the home team was able to rest their entire first-choice quartet in the heats, while Australia was only willing to rest Kerry, with Glenn Patching swimming the backstroke leg in his place.
Split into simpler sentences: With their superior depth, the home team was able to rest their entire first-choice quartet in the heats. On the other hand, Australia was only willing to rest Kerry, with Glenn Patching swimming the backstroke leg in his place.