Satoria, the famous electrical worker from Ostrava, lit up the World Baseball Classic three years ago after striking out Shohei Ohtani and back in Tokyo, he was at his slippery best once more.
The 29-year-old announced he would be retiring from international duty on Monday, saying it was "the right time" to step away, having become a recognised star in Japan.
Stepping onto the mound, he showed none of the emotion that comes with saying goodbye, instead keeping a lineup, without Ohtani, quiet through 4.2 innings of work. His pitch mix, which rarely goes above 80mph, was deadly, throwing off batters' timing throughout his pitching.
He struck out three, including new Toronto Blue Jays third baseman Kazumu Okamoto, and gave up just six hits in the outing. His coach, Pavel Chadim, came to get him in the fifth inning, and his teammates all acknowledged his work with the Tokyo crowd rising for Satoria.
The visibly emotional left-hander took his time to leave the field, soaking in one last moment on the big stage.
The Czech side, who had not won a game during pool play, would finish bottom of the group no matter the result, meaning they would have to re-qualify for the next iteration of the Classic.
But, they were crisp in the field and backed up Satoria well, to keep it scoreless through six innings.
Their bats, a weakness in this WBC, struggled once again, with Japanese starter Hiroto Takahashi matching Satoria's effort with 4.2 innings pitched, five strikeouts and just two hits given up.
Their pitchers were keeping them in the game. After Satoria's heroics, Michal Kovala came into the game and carried on the shutout. Even with a runner on third for Japan and just one out, he was able to get a strikeout and a flyout to take the contest into the eighth, still without a run.
Japan had not lost in the WBC since 2017, and as hopes of a massive shock were starting to rise, they dashed them in the bottom of the eighth inning.
Kenya Watatsuki hit a double down the right field line, getting Teruaki Sato into scoring position. He was being held at third by his coach, but a throwing error from William Escala allowed Sato to trot home and score the first run of the day.
With Kovala now struggling to find his rhythm, Ukyo Shuto made him pay to break the game open, smashing a three-run home run 367 feet into the stands to all but end the contest.
Japan would load the bases with two outs and continued the damage in the same inning. Munetaka Murakami hit a grand slam over centre field to give the home fans the perfect way to see their team off in style.
Scoreless after seven, incredibly now 9-0 up in the eighth, Japan had the opportunity to 'mercy rule' the game, but they were unable to get that extra run to end the contest.
It was little trouble for Koki Kitayama, who struck out the Czech side to see Japan's winning run continue.
With Pool C now over, Japan and South Korea both head to the United States for the quarter-finals as the top two sides, whilst Australia and Chinese Taipei will return for the next WBC after finishing third and fourth in the five-team group.