Venus Williams bounced back after losing the first set against Lindsay Davenport to take the Wimbledon title in the longest women's final in history.
Here Hawk-Eye commentator Jason Goodall investigates the part played by both opponents' serve in their momentous three-set match.
Davenport served well in the first set - predominantly using her slice service to Williams' weaker forehand side and winning just below 70% of her first serve.
Williams came into the match reducing the speed of her groundstrokes - from an average of 74 mph in the semi-final to 67 mph in the final, and bringing an extra consistency and placement to her shots which enabled her to get back on level terms in the second set.
Davenport's serve became less effective in the second and third sets. The percentage of points won on her first serve fell to just 50% and by the end of the second set both players were having more trouble holding their own serve than securing breaks.
It may have been that Davenport's injury forced her to change her serve direction in the third set as she began serving exclusively down the T. The slice serve may have been causing more pain to her back injury, forcing her to swith to a flat serve down the middle.
Davenport looked to exploit weaknesses on the Williams' second serve, which averaged only 88 mph and was often very short. In the first two sets this was a very successful tactic as Venus only won 40% and then 36% of the points on her second serve
In set three, not only was Venus able to get a better percentage of first serves in - 77%. She also won 62% of points on her weaker second serve and that proved to be the difference in the decisive third set.