On a sleepy Roland Garros afternoon, Roger Federer found himself discussing life lessons in tennis, carrying the Swiss flag at the Olympics ... and Queen Elizabeth's diamond jubilee.

It's been nine years since the great Swiss last lost a Grand Slam match before the third-round stage, so he is not surprised when faced with questions which have little to do with the business just completed.

So it was on Wednesday as Federer moved into the last 32 of the French Open with a four-set win over Romania's Adrian Ungur with a record-breaking 234th Grand Slam match win.