It was grand slam day at the O2 yesterday.

The parade of champions comprised the 2014 winners of the Australian Open, Wimbledon and the US Open.

Senor Rafael Nadal, winner of the French Open this year and, frankly every year, is at home recovering from surgery.

The rest of the world is quietly recovering from the reality that Stanislas Wawrinka won in Melbourne and Marin Cilic triumphed at Flushing Meadows. Novak Djokovic's victory at Wimbledon was his seventh grand slam so was about as shocking as a politician reneging on a promise.

The trio gathered on the banks of the Thames with Tomas Berdych to make up the quorum. The lessons offered were delivered quickly in two periods each lasting just under an hour. It took Wawrinka 58 minutes to defeat Berdych 6-1, 6-1. Djokovic turned over Cilic 6-1, 6-1 in 56 minutes.

The most obvious conclusions to be drawn were that Wawrinka, if he could have less of a life outside tennis, may have more grand slams to win, that Berdych will have to console himself with tens of millions rather than one major, and that Cilic may consider New York 2015 as a singular lifetime achievement. The story, of course, is different for Djokovic. At 27, he is at his peak while his perennial rivals have either climbed the mountain or may be slipping down the other side. Nadal is battered, bruised and stitched. Andy Murray is stretching to make that major step again and Roger Federer, at 33, has not won a grand slam since 2012.

Djokovic, in contrast, has taken his winning streak indoors to 28 and his personal record against Cilic to 11-0, which is the sort of statistic that demands the intervention of social services.

If the matches passed in a time under the standard TV drama, there was just enough for the discerning spectator to enjoy. Wawrinka, when fit and motivated, has the ability and the sheer force to prevail in grand slams. At 29, he could be a regular contender at the sharp end, particularly in Melbourne and New York. Djokovic has that belief, that sublime technique, that sinuous movement that adds substance to his air of invincibility. Grand slam day at the O2 in 2015 may just involve the Serb. He is good enough to win all four and one suspects he knows it. And so do his opponents.