Former Wimbledon champion Lleyton Hewitt believes Nick Kyrgios does not necessarily need a coach to go the distance in a grand slam tournament.
Kyrgios was beaten by home favourite Andy Murray in the fourth round at this year's Wimbledon, crumbling to a 7-5 6-1 6-4 defeat in a performance that drew criticism of his attitude in the latter stages of the match.
But Hewitt, who works with Kyrgios as captain of Australia's Davis Cup team, believes the 21-year-old has the talent to claim a major title in future.
"Absolutely he can, but you've got to turn that talent into results in the big tournaments," he told Omnisport.
"So far he's been around the quarter-finals and the 16s of every major.
"He's still only 21 and he's going to mature over time, but the more opportunities he gets to play the likes of Andy Murray here at Wimbledon on Centre Court in front of big crowds, that's what he needs to become a better player."
Asked whether Kyrgios, who plays without a coach, would benefit from further input into his game, Hewitt added: "Everyone's different. If he's going to get someone full-time, he has to find the right person for him.
"Only he knows that, who the right person is, and in terms of my role and Jason Stoltenberg as Davis Cup coach, we're sort of around there to support him in any way possible, but we're not travelling week in and week out with any particular player."
Hewitt was speaking on behalf of HSBC, the Official Banking Partner of The Championships, who are committed to supporting tennis from the back garden to Centre Court.