Early arrivals on Centre Court were treated to a bonus as Andy Roddick got in some last-minute practice.
His coach Brad Gilbert had complained that Roddick had played only one match on the showpiece court, and officials clearly took that on board.
The American went through his repertoire of huge serves, crunching groundstrokes and a surprising number of volleys for half an hour.
What did we learn about his tactics? He's going to serve big. Very big.
FED LOOKING GOOD
Federer, meanwhile, has had plenty of time on Centre Court and so was happy enough to warm up on the normal practice courts.
Word soon spread among the sizeable crowd already inside the All England Club and every possible vantage point was taken to catch a glimpse of the champion.
The BBC Sport tactical scouting tip? Watch out for the Federer backhand. And the forehand. And the serve's pretty good too. Oh, and the volleys....