South Africa's Lloyd Harris caused an upset at the Qatar Open by beating three-time Grand Slam winner, Stan Wawrinka, in the first round on Tuesday.
Harris, who qualified for the event, beat Wawrinka in three sets 7-6 (7/3), 6-7(6/7) and 7-5 in a match that lasted two hours and eight minutes.
Harris managed 11 aces in the match to the 17 of Wawrinka but was able to save seven of the eight break points he faced.
"I don't have many words right now," Harris told the ATP Tour.
"Stan was my idol growing up, so just to play against him was incredible. I was as determined as I could be, really pumped to play. I am proud of how I fought back after losing the second set. I feel like I've done really well in the past couple of months and I hope to keep the momentum going."
Harris will now face Hungarian Marton Fucsovics in the next round.
Dominic Thiem is the top seed for the event which also features Roger Federer who makes his long awaited return from injury.
Results from the ATP Qatar Open in Doha on Tuesday (x denotes seeding):
Marton Fucsovics (HUN) bt Dusan Lajovic (SRB) 7-6 (7/3), 6-3
Lloyd Harris (RSA) bt Stan Wawrinka (SUI x7) 7-6 (7/3), 6-7 (6/8), 7-5
David Goffin (BEL x6) bt Filip Krajinovic (SRB) 6-4, 6-4
Vasek Pospisil (CAN) bt Christopher O'Connell (AUS) 6-3, 6-4
Malek Jaziri (TUN) bt Norbert Gombos (SVK) 6-2, 7-5
Dan Evans (GBR) bt Jeremy Chardy (FRA) 6-4, 1-6, 6-2