Emma Raducanu slumped to a straight sets defeat against reigning champion Camila Giorgio at the National Bank Open in Toronto,

admitting she needs to better cope with the pace of the game at the highest level. The first-round loss marked a less-than-ideal set-up for world number 10 Raducanu,

19, who looks to defend her title at the US Open later this month. It was a disappointing early departure for Raducan from her debut in Toronto,

the city she was born before moving to the UK as a toddler. The 7-6(0), 6-2 loss in one hour and 49 minutes followed a similar pattern

to her Citi Open quarter-final defeat to Liudmila Samson in Washington, DC last week, where she was hampered by hand blisters.

There, after losing a tightly contested first-set tiebreak, Raducana wilted against the power of momentum and superior experience of her opponent.

He played exactly the same format against Italian Giorgi. World No. 29 Giorgio - like Samson - is a tough opponent who has proven this season

that other top players are hard to beat. She is a big player who plays high-risk tennis, sometimes erratically but other times with great effect.