Despite facing many big serve + forehand combos , Djokovic is doing his part to put relentless pressure on Isner .
3 : 04 PM : Djokovic holds again and Isner then fights off a break point to hold , leading again at 4 - 3 .
Despite facing many big serve + forehand combos , Djokovic is doing Djokovic 's part to put relentless pressure on Isner .
3 : 04 PM : Djokovic holds again and Isner then fights off a break point to hold , leading again at 4 - 3 .