Complex sentence: Angelique Kerber was in contention for the world No.1 ranking, which she would have attained had she won the title, but she lost in the final to Karolína Plíšková 6--3,6--1.
Split into simpler sentences: Angelique Kerber was in contention for the world No.1 ranking, which she would have attained had she won the title. Kerber lost in the final to Karolína Plíšková 6--3,6--1.