SHANGHAI: Novak Djokovic said he had to “fire up all engines” as he overcame a stodgy first set to reach the third round of the Shanghai Masters on Friday, beating fellow veteran Marin Cilic 7-6 (7/2), 6-4. The 38-year-old Serb is aiming for a record-extending fifth title in Shanghai, where he was greeted by rapturous cheers as he entered a stadium packed with adoring Chinese fans. The combined age of Djokovic and Cilic — 75 years and 139 days — was the oldest ever between two opponents in an ATP Masters 1000 main draw match. “I did enjoy it, but I also suffered a lot on the court,” said Djokovic. “It was a very close match.