This was evident when he gave Federer an early scare by winning the second set 6-1.
Previous year he was close, losing an epic semi to Djokovic when victory would have left him facing an exhausted Kevin Anderson in the final - a virtual open goal.
"I'm exhausted. It was tough at the end".
Here are some of the reactions.
"But at the same time I created another opportunity to be in another final of a Grand Slam".
That was 2012 in four sets in a Wimbledon semi-final.
Djokovic got here by beating 23rd seed Roberto Bautista Agut.
But it looks like Nadal will have to put his dreams of Grand Slam glory on hold for now because Sunday (July 14, 2019) will see Federer and Djokovic battle it out on centre court in the Wimbledon final.
Federer is running out of time to add to his record-breaking eight Wimbledon titles but there is a firm belief among his fans that this could be his year.
No dice netter from Nadal, two more match points wasted by Federer, which left wife Mirka, in the player's box, peeking at the action through her fingers. "For players like Nadal or myself that like to have a little more time, it's a constant pressure that you have to deal with".
Win or lose tomorrow's match with a ninth career title on the line, Friday will forever stand as a monument to Federer's unmatched ability with a racquet.
The Serb, a four-time champion, heads into the championship match against Federer with 25 wins over the Swiss and 22 losses.
Before 2017, Federer had a losing 23-11 head-to-head record against Nadal. He clung on at 3-5, saving two match points, then had a break point as Federer served for the match.
This time, Federer came through, although he needed five match points to secure his 7-6 (3), 1-6, 6-3, 6-4 victory. "He had that match point, he served for the fourth set, but Roger wouldn't be Roger if he wouldn't always find another shot".
The second Grand Slam semifinal in five weeks between Federer and Nadal-the two faced off at the French Open, where Nadal won in straight sets-started with 12 straight holds before Federer played a terrific tiebreak to get his nose in front.
"You go through these kind of emotional moments, especially in big matches like this, all the time", Djokovic said.
"So I just walked into the dressing room to say good luck to Roger and I said: 'What, is Rod giving you some last-minute tips on how to play left-handers?'"
Djokovic became ragged, and his mood darkened when Bautista Agut levelled the match with a forehand off the netcord, the ball dropping dead on the world number one's side.
At Wimbledon to celebrate the 50th year of his 1969 calendar-year grand slam sweep, Laver has offered a fascinating insight into not only Federer's legendary feats on the court, but also the ageless champion's remarkable human spirit off it.
"I had to dig deep", said Djokovic, 32, who claimed he got tight in the middle games of the second set.
Once his volley victor found the net tape and trickled over to cap the third set - turnabout was fair play, in this instance, after the way the previous set ended - the outcome seemed inevitable.