Complex sentence: Following the tournament, Kyrgios moved into the world's top 20 for the first time, becoming the youngest player to be ranked in the top 20 since Marin Čilić, seven years previously.
Split into simpler sentences: Following the tournament, Kyrgios moved into the world's top 20 for the first time. He is the youngest player to be ranked in the top 20 since Marin Čilić, seven years previously.