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Arsenal's Mikel Merino, left, celebrates after scoring his side's third goal during the Champions League opening phase soccer match between Slavia Prague and Arsenal in Prague, Czech Republic. | Photo: AP/Petr David Josek
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Slavia Prague fans cheer during the Champions League opening phase soccer match between Slavia Prague and Arsenal in Prague, Czech Republic. | Photo: AP/Petr David Josek
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Arsenal's Max Dowman, center, runs with the ball past Slavia's David Zima during the Champions League opening phase soccer match between Slavia Prague and Arsenal in Prague, Czech Republic. | Photo: AP/Petr David Josek
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Slavia's Daiki Hashioka, right, is challenged by Arsenal's Bukayo Saka during the Champions League opening phase soccer match between Slavia Prague and Arsenal in Prague, Czech Republic. | Photo: AP/Petr David Josek
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Arsenal's Max Dowman runs with the ball past Slavia's Vasil Kusej during the Champions League opening phase soccer match between Slavia Prague and Arsenal in Prague, Czech Republic. | Photo: AP/Petr David Josek
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Arsenal's Mikel Merino, right, scores his side's third goal during the Champions League opening phase soccer match between Slavia Prague and Arsenal in Prague, Czech Republic. | Photo: AP/Petr David Josek
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Arsenal's Bukayo Saka, left, attempts a shot at goal in front of Slavia's Youssoupha Mbodji during the Champions League opening phase soccer match between Slavia Prague and Arsenal in Prague, Czech Republic. | Photo: AP/Petr David Josek
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Arsenal's Mikel Merino, right, celebrates with his teammates after scoring his side's second goal during the Champions League opening phase soccer match between Slavia Prague and Arsenal in Prague, Czech Republic. | Photo: AP/Petr David Josek
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Slavia's Tomas Vlcek, right, and Slavia's David Zima remonstrate with referee Aliyar Aghayev during the Champions League opening phase soccer match between Slavia Prague and Arsenal in Prague, Czech Republic. | Photo: AP/Petr David Josek
