Naomi Osaka <br />Knocked Out of <br />Olympics in Third Round.<br />The tennis superstar lost to Marketa Vondrousova of the Czech Republic 6-1, 6-4 on Tuesday.<br />The tennis superstar lost to Marketa Vondrousova of the Czech Republic 6-1, 6-4 on Tuesday.<br />I'm disappointed in every loss, <br />but I feel like this one sucks <br />more than the others. , Naomi Osaka, via ESPN.<br />Vondrousova, who is ranked 42nd, acknowledged the amount of pressure Osaka was under.<br />It's tough for her also playing in Japan and in the Olympics ... It's so much pressure, I cannot imagine, Marketa Vondrousova, via ESPN.<br />Osaka won her first two opening matches <br />after lighting the Olympic cauldron during <br />the opening ceremony last week.<br />The tennis star referred to her role lighting <br />the cauldron as "undoubtedly the greatest athletic achievement and honor I will ever have in my life.".<br />The Tokyo Games marked <br />Osaka’s return to tennis after a <br />two-month mental health break.<br />The star athlete left the French Open after <br />being reprimanded for not speaking to the <br />press and later sat out of Wimbledon