The Brit, 22, lost the opening two games of set one against Karolina Muchova in round two of the Dubai Tennis Championships.
And a fan – who appeared to shout out something towards Raducanu on court 2 – was then ejected from the venue by security staff.
Muchova, 28, ended up winning 7-6 6-4 on a day interrupted by rain delays and the No.14 seed will now play McCartney Kessler, who shocked American world no.3 Coco Gauff 6-4 7-5.
This was Raducanu’s 13th wildcard in 18 WTA tournaments and her fifth defeat in six matches.
EMMA RADUCANU broke down in tears before being dumped out of a desert event at midnight.
