Nick Kyrgios is confident his game is on track for a tilt at Wimbledon after his Queen's Club campaign ended at the semi-final stage. Even whatever was coming on my own end off the returns, I was being very focused and had to take care of those balls really well.
"I'm just self-critical, I guess, at times", Djokovic said. "Today I just didn't have any chances to break at all".
He could not quite reach that level again but was still happy with his grasscourt form having lost narrowly to Roger Federer in the Stuttgart semis last week and beaten former Wimbledon champion Andy Murray for the first time at Queen's.
Djokovic said courtside: "That was a great comeback". It's a tough loss but I have to see it from a positive side. "But I have to see the positive because I haven't played a final in nearly a year". "It came at the right time ahead of Wimbledon, the most prestigious tournament in the world, and I've had the fortune to win it three times".
The Serb saved all three with big serves but a double fault put him back under pressure.
Cilic arrived here with a proud record on the Queen's Club grass. Djokovic said when asked how he would cope with the power of Cilic's serve. He had to scramble to save match point at 4-5 and, from that point on, grew in self-belief.
Granit Xhaka and Xherdan Shaqiri's Albanian flag celebrations for Switzerland draw attention
Such displays have angered some Serbian fans, who often wear T-shirts bearing the map of Kosovo with the Serbian flag on it. The win puts Switzerland into second place in Group E with four points, the same as Brazil.
The Croatian snatched at the opportunity as he won six points in a row to take the match to a third set. The fretfulness heightened, as Djokovic fought against fatigue and his opponent's increasingly potent forehand.
The top seed raised his game when it mattered most, winning both tiebreakers against the Australian in a match which featured no breaks of serve.
Cilic will take on Novak Djokovic in Monday's (AEST) final.
Petra Kvitova roars in celebration after winning in Birmingham.
Cilic, who last won the title in 2012, controlled the early exchanges from the baseline but missed six break point chances in the opening set, allowing Djokovic to battle back. There's a lot of grass court players. "As expected a couple of points made the difference in the tiebreaks".