I was on court to see the wise old fox take down Britain's hero

In the end the relentless drive and determination of Marin Cilic was just too much. Yes the Croatian has only recently got back to full fitness and serious top level competition after a serious knee injury suffered two years ago but his career experience really told in the end.

He is a grand slam winner having notched up the US Open title in 2014 . That takes serious know how. Jack Draper could well be a slam winner too one day but at the moment older was wiser.

Cilic played an awesome game it has to be said.

The number court crowd were desperate for a British win but were very soon aware this was going to be no walk in the park for our number one and 4th Wimbledon seed.

Big booming serves meant Cilic's own service games were rarely threatened by Draper bar the third set.

But his powerful ground strokes were brilliant too, forcing Draper deep and wide and away from his favourite forehand. It was clever and canny from Cilic. You felt the Brit was always fighting hard just to stay in the rally.

Cilic's grip was briefly broken in the third set as Draper found his mojo and started to go on the attack.

The number one court crowd was loving it and there was expectancy in the air in the fourth set Draper could turn it all around after losing the first two so tamely.

Every winning Draper shot was cheered from the rafters bar the odd shout of "Marin!" from the Croatian a couple of rows in front of me.

Draper was clearly giving his all but Cilic just was not for budging in the crucial fourth set.

Draper said afterwards he had a bad stomach before and during play.

He certainly did not look happy with his game and as the fourth set started the contest became increasingly tight and tense.

Draper became more and more irritated by some very close line calls that went against him but who can argue with the AI line call technology right?

I have some sympathy. Several Cilic shots looked dangerously close to being out and others around me in the crowd thought exactly the same. Come on AI our Brit needs some help, you know!

Draper certainly thought he had been hardly done by as he angrily raised the issue with the umpire and then lashed a stray ball into the back of the court in frustration as another call went against him.

Our Jack was beginning to think luck was against him. But the real problem was the relentless nature of Cilic. He just would not back down and as the tension rose in the stadium there was only one man who was benefiting.

Draper successfully scrambled to save break points on his serve in the eighth game and the crowd were in a frenzy.

But he could not use that impetus in the ninth as Cilic held easily.

The Croatian smelt blood and broke the Draper serve in the 10th to clinch the win 6-4 6-3 1-6 6-4.

By the time Cilic faced his on court interview Draper had long gone. After a brief wave to the crowd he was out of there - no doubt to take out his frustrations on an inanimate object in the dressing room.

You can't blame him for feeling very frustrated. He clearly has the enormous talent, the next step is the know how.

The wily fox had devoured the angry young chicken.