With its slick surface and low bounce, Wimbledon does not lend itself to as many upsets as the French Open or even the hard-court Grand Slams.
Glance down the list of champions through the ages, and you'll see a few names repeated again and again, revealing how dominant certain players have been on the surface. Thus when an upset does occur, it's far more shocking than one on any other surface.
With that in mind, here are some of the biggest upsets from Wimbledon:
1975 Men's Final
Arthur Ashe def Jimmy Connors 6-1 6-1 5-7 6-4
Connors was the defending champion - a 22-year-old tryo who would go on to win eight Grand Slams. He was expected to romp to victory against Ashe, who was his senior by a decade and had last won a major five years ago. But Ashe implented his tactics to perfection, denying Connors any pace to generate power for his grounstrokes and sweeping the first two sets 6-1 6-1.
When Connors took a close third 7-5, the fans had visions of yet another famous comeback from the him, but on this day, it wasn't to be. Ashe kept his cool to break his opponent for 5-4 in the final set before calmly serving out the match to become the first black man in history to win Wimbledon.
The triumph was all the more sweeter for Ashe because of the history between the two players. In fact, the bespectacled American, who was president of the ATP at the time, was being sued by Connors for not allowing him to play in the French Open the previous year due to his commitments with World Team Tennis. Connors would later drop the suit.
What Connors said: "I couldn't find an opening. Whether I served wide balls, or kicks he was there. Everything he did was good: fine returns, short and long, and hard serves and volleys."
What Ashe said: "I always thought I would win because I was playing so well and was so confident."
What happened next: Ashe never reached the final of a Grand Slam again and retired from the sport in 1980. In 1988, he was diagnosed with AIDS - the cause of which was a blood tranfusion he had received after a heart surgery in 1983. Ashe died in 1993 and the main stadium at USTA National Tennis Centre where the US Open is played was named after him.
Connors went on to win Wimbledon for the second and final time in 1982, but carried on playing until 1991 and is considered one of the best tennis players of all time. He never made up with Ashe, even refusing to attend the stadium renaming ceremony at the USTA in 1997 - four years after Ashe's death.
1987 Men's Final
Pat Cash def Ivan Lendl 7-6 6-2 7-5
Going into the 1987 final, Ivan Lendl was the number one ranked player in the world and with defending champion Boris Becker out, was supposed to finally lay to rest his Wimbledon hoodoo. Instead, it was a flashy Australian who stole the limelight.
Though not quite in the McEnroe-Borg or Sampras-Agassi mould, this was yet another classic match-up between the baseliner Lendl and the serve-and-volleyer Cash. The unerring accuracy of Lendl was widely tipped to see off the exciting but error-prone Cash but on this day the Aussie was unstoppable, ripping returns off the Lendl serve and making life miserable for his opponent.
Lendl sparked hopes of a revival when he went up 5-2 in the third set, but this was to be the day of the underdog. Cash hit back to take the set and Championship before climbing the stands to hug his parents and girlfriend - a celebration that is now part of Wimbledon folklore.
A heart-broken Lendl had just seen his best chance of grass glory pass by.
What Cash said: "I really wanted to hold my serve in that first game. I was very nervous. It really is a terrible feeling, you`re shaking, and you`re tentative. After I got the first game, I felt a lot better. Then I immediately dropped into a good rhythm on his serve, which was a big confidence booster."
What Lendl said: "I thought I had a very good chance of winning, but he just played better in every department than I did. He was putting so much pressure on my serve, getting returns back, lobbing, dinking. I thought he wouldn`t return that well. I didn`t think he was going to be hitting winners. I believe that the loser shouldn`t be there [at the presentation ceremony]. He should just be allowed to leave. This is a miserable feeling."
What happened next: This was the only Grand Slam of Cash's career which was blighted by back and knee injuries. He did reach the final of the Australian Open the following year before losing to Mats Wilander, but then never progressed beyond the fourth round of a major until his retirement in 1997.
Lendl added two more Australian Open to his Grand Slam kitty, but never reached close to another Wimbledon title, emulating the great Ken Rosewall whose eight slams did not feature a single Wimbledon trophy.
1994 Women's First Round
Lori McNeil def Steffi Graf 7-5 7-6
It was the mother of all upsets. Graf was the world number one, the defending champion and had won five of the previous six Wimbledons. McNeil's best Grand Slam singles result had been a US Open semi-final appearance seven years ago. McNeil had had some success against the German in the past, notably a straight sets win at the WTA Championships in 1992, but Graf was supposed to romp to a win on her favourite surface.
On a cold, windy day - a horrific advertisement for the British summer, Graf struggled with her groundstrokes and serve, she managed only one ace in two sets and that was just not good enough against the serve and volleying McNeil, who attacked the Graf backhand throughout the match and reaped rich rewards.
Adverse weather conditions saw the match stretch to five hours and finish just as darkness was sweeping over SW19. It was the first time in 108 years that the defending women's champion had lost in the opening round.
What McNeil said: "That was a big part of my strategy, to make her pass me off the backhand side. Everyone knows Steffi has a great forehand. It's definitely the best win."
What Graf said: "(It's) not that big an upset because of who I lost to, I would say. I mean, it was a very difficult first round and she has always the ability to play the top players, so it's not that big of an upset. She played better than me. That's very obvious."
What happened next: McNeil progressed all the way to the semi-final before losing to eventual champion Conchita Martinez 10-8 in the final set. The American gave Graf a huge scare again in the final of the Advanta Philadelphia Championships in 1995, taking the German to three sets before going down 1-6 6-4 3-6. She never again progressed beyond the third round of a Grand Slam and retired in 1998.
Graf bounced back with a vengeance, recapturing Wimbledon in 1995 and then defending her title a year later. She retired in 1999 with 22 majors to her name and claims to being the greatest women's player ever.
1996 Men's Quarter-final
Richard Krajicek def Pete Sampras 7-5 7-6 6-4
Wimbledon in 90s was the domain of big serve and volleyers, with the likes of Boris Becker, Goran Ivanisevic, Todd Martin, Patrick Rafter and Tim Henman regular fixtures in the latter stages of the tournament. For the most part, Sampras towered above them all. Except in 1996.
In 1996, Richard Krajicek - another big serve and volleyer whose best showing at Wimbledon until then had been a fourth round appearance, managed what no else could between 1993 and 2000 - he outserved, out-volleyed and out-gunned Sampras on centre-court. For three sets, the Dutchman gave Sampras a taste of his own medicine, coming in on the back of a huge serve, volleying brilliantly and even outgunning the world number one from the back of the court with a newly minted top-spin backhand.
At the time, the duo had split their four matches evenly, but just like Graf against McNeil in 1994, Sampras was the overwhelming favourite in what was by now his backyard. But in three sets highlighted by bombastic serving, Krajicek shocked the tennis world, bringing an end to the American's 25-match unbeaten streak at Wimbledon.
What Krajicek said: "I was really focused on my own serve and as long as I hold my own serve, then you cannot lose a set until a tie break, maybe probably, so that was my strategy. I kept focused on his backhand and it would break down after a while. I don't know if it really broke down in that match, but I just stayed very focused."
What Sampras said: "I don't like losing, especially here. My hat's off to him. He played a better match than I did, but it's hard to swallow. Obviously, for the past three years, no one has beaten me, so I'd say he's given me my hardest test and I wasn't good enough. When he's serving that big, it's just so tough to break, and his return and his passing shots off his backhand really caught me by surprise."
What happened next: Krajicek went on to become the first Dutchman to win Wimbledon, beating MalVai Washington in straight sets in the final. He never reached those dizzy heights again, and beset by injures - retired in 2003. He was however, one of the few players to have a winning record against Sampras, leading 6-4 in their head-to-head.
Sampras went on to finish with a then-record 14 Slams, and did not lose at Wimbledon again until the fourth round of the 2001 Championships. His conquerer on both counts? Roger Federer.