Nick Kyrgios has called on Lleyton Hewitt to assist him in a mentoring and coaching role in the lead-up to the US Open.

Hewitt and Kyrgios are scheduled to play doubles together at this week’s Masters event in Montreal.

Kyrgios also returns to singles action in the Canadian tournament with a first-round clash against Spaniard Fernando Verdasco on Wednesday morning.

Kyrgios’s mother Nill told the Canberra Times her son “wasn’t in a good head space” after the recent Davis Cup tie against Kazakhstan in Darwin, when he lost his opening singles match to little-known Aleksandr Nedovyesov and did not play again as Australia recovered from a 0-2 deficit to win and book a place in the semi-finals.

Kyrgios parted ways with coach Todd Larkham in the lead-up to Wimbledon and has yet to decide on a permanent replacement.

“He will listen to Lleyton because he knows what he’s talking about, he’s been at the top and been world No.1,” said Nill Kyrgios.