John McEnroe, the three-time Wimbledon singles champion and ESPN analyst, said he sees signs of aging when Federer approaches the net.

WSJ: Wimbledon 2012: Roger Federer's Wimbledon Bluff

He let the advantage slip but his ability to mix up both his serve and his approaches to the net continued to confound Hewitt and after breaking again at 3-3 he duly served out the set.

BBC: Hewitt breaks Henman resolve

Abandoning an automatic credit for biogenic carbon is the only way to define a consistent GHG accounting framework without resorting to unverifiable assumptions about the extent of net carbon uptake that complicate other approaches, DeCicco argues.

FORBES: Rethinking Life-Cycle Fuel Regulations