French Open: defending champion Ostapenko eliminated in first round
Defending champion Jelena Ostapenko crashed out in the first round of the French Open on Sunday after a 7-5 6-3 thrashing by Ukrainian Kateryna Kozlova.
Defeat meant Ostapenko became only the sixth female major winner to fall at the first hurdle of her title defence, joining Anastasia Myskina, Steffi Graf, Jennifer Capriati, Svetlana Kuznetsova and Angelique Kerber.
"It was terrible day," world number five Ostapenko said.
"I just woke up here and my mood was not amazing. A few things go wrong and you are pissed off, but you try to stay positive. Then you lose a match, and it is no longer possible to be positive."
Former finalist Venus Williams joined the 20-year-old in exiting Roland Garros as the American slumped out 6-4 7-5 to China's Wang Qiang.
Second seed Alexander Zverev had no trouble negotiating his first-round opponent, as he comfortably swatted aside Ricardas Berankis 6-1 6-1 6-2.
Grigor Dimitrov, another player tipped to go deep in the event, powered past lucky loser Mohamed Safwat 6-1 6-4 7-6(1).
Dimitrov's original opponent Viktor Troicki withdrew with lower back pain.
Australia's Nick Kyrgios also pulled out ahead of Monday's contest with compatriot Bernard Tomic with an elbow injury.
World number one Rafa Nadal begins his title defence on Monday with a clash against Italy's Simone Bolelli on Court Philippe-Chatrier.