World No. 1 on key energy source.
Two factors prompted German to hire Ivan Lendl instead of Boris Becker as coach.
Second-ranked Swiss takes draw in stride.
A first-round casualty last year, world No. 1 optimistic for Open.
World No. 123 heading in right direction says Hall of Famer.
Easy shot is excruciating miss.
Grand Slam rivals will be Laver Cup teammates next month.
