NOVAK DJOKOVIC sent a classy WhatsApp message offering help to Ukrainian former tennis pro Sergiy Stakhovsky.

Stakhovsky was born in Kyiv and now lives in Hungary

Sergiy returned to his homeland when Russia invaded the country last month.

Novak Djokovic messaged Sergiy Stakhovsky to offer his help in the Ukraine war

He has signed up to join the army and aid in the heroic defence by the Ukrainians.

Stakhovsky shared a screenshot of his WhatsApp conversation with the 20-time Grand Slam champion and one of the greatest players ever.

Stakhovsky famously beat Roger Federer in an astonishing second-round result at Wimbledon in 2013.