#3 Lleyton Hewitt
2-time Grand Slam winner Lleyton Hewitt is a big admirer of the prodigious Kyrgios, to the point that he has come out publicly many a time in support of his controversial compatriot. Hewitt, who retired after the Australian Open earlier this year, knows Kyrgios very well during their stints for Australia at the Davis Cup.
Though Hewitt has no credentials yet as a coach, maybe Kyrgios will benefit from Hewitt's presence in his support team.
For Hewitt has been a huge fan of Kyrgios' impulsive game, as evident from these words - "He's got to keep his passion, that's the biggest thing. When he is up and about, he's playing his best tennis. You don't want to take that flair and flashiness away from him. That's the thing that can make him a top-10 player.” But after what has transpired recently, Hewitt might relish the challenge of helping Kyrgios climb up the rankings ladder while keeping the flair in his game.
