Feast of titles is largely down to diet change - Djokovic

(Reuters) - A change of diet has played a major role in Novak Djokovic's unbeaten run this year, the world number two said on Monday after receiving a hero's welcome from fans in his home town.

The 23-year-old Serb, who has won 24 straight matches to land the Australian Open and Dubai Championship titles and Masters Series events in Miami and Indian Wells, said a doctor who joined his team eight months ago had improved his fitness.

"His name is Igor Cetojevic, he is a nutritionist and he's done a great job in changing my diet after we established I am allergic to some food ingredients like gluten," Djokovic told reporters on the opening day of the Serbia Open.

"It means I can't eat stuff like pizza, pasta and bread. I have lost some weight but it's only helped me because my movement is much sharper now and I feel great physically.

"A lot of people have been guessing and speculating what the secret formula of my good form was but there is no secret, it's just that all the pieces have fallen into place after years of hard work and we are now reaping the rewards," added Djokovic.