Complex sentence: Holder bowled seven deliveries--six denoted a normal over, but he had to bowl one extra due to a no ball--all to Rose, who did not play any scoring shots, and declared Somerset's innings complete at the end of the over.
Split into simpler sentences: Holder bowled seven deliveries--six denoted a normal over, but he had to bowl one extra due to a no ball--all to Rose. Rose did not play any scoring shots, and declared Somerset's innings complete at the end of the over.