Following a straight-sets upset over six-time champion Roger Federer in his opening match, Kei Nishikori came crashing back to earth with a 6-0, 6-1 loss to South Africa's Kevin Anderson at the ATP Finals on Tuesday.After beating Anderson earlier this month at the ATP Masters in Paris, Nishikori was outgunned by the South African in just 1 hour, 4 minutes at London's O2 Arena.The heavy loss came less than 48 hours after world No. 9 Nishikori handed 20-time Grand Slam champion Federer his first straight-sets loss in round-robin play at the tournament.Narrowly avoiding just the second 6-0, 6-…READ FULL ARTICLE
