Tennis-Canada's Auger-Aliassime set for 'big challenge' against Murray

TOKYO, July 23 (Reuters) - Going by current rankings, the first-round clash between Canadian Felix Auger-Aliassime and Britain's Andy Murray at the Tokyo Olympics would seem like a mismatch. The 20-year-old Auger-Aliassime is ranked 15th in the world and coming off a quarter-final appearance at Wimbledon while Murray has dropped...