Except as someone mentioned grass was changed in 2002, not 2001.
The grass was changed in 2002, the GOATness of the GOAT though allowed him to still win 7 Wimbys and beat Nadal twice on the green clay.
Did No2e (or anyone) say it was too dark in that semi in '11? I can't remember. It certainly was very dark for tennis in 08 final though, as represented by the near pitch black conditions 15 minutes after MP with Nadal getting photographed on court.
Why does the clay court speed of RG 2009 matter if the only reason Nadal lost was bc he was injured?