Juergen Klopp's Liverpool side went into the game, their first competitive match in 103 days, knowing a victory would allow them to secure their first league title in 30 years on Wednesday with a win at home to Crystal Palace.
Japan international Kamada scored from a Bas Dost layoff to throw his team a crucial Bundesliga lifeline after they had gone six games without a win, including five defeats.
Troy Deeney, captain of English Premier League team of Watford, faces backlash from trolls after choosing not to return to training.
Arsenal's squad will be allowed back to their training ground from next week, although the club stressed they would still have to maintain British government guidelines designed to combat the spread of the coronavirus.
The Super Cup game heralding the beginning of the football season took place behind closed doors, and saw perennial domestic champions FC Istiklol come from behind to beat FC Khujand 2-1 in the capital Dushanbe.
Klopp and his entire first team were all absent for the fourth round replay at Anfield as part of the club's winter break. The Liverpool manager was criticised for disrespecting the FA Cup, but his youngsters proved up to the task.
It is the first time Liverpool have won the competition, which features each continent's champions, and they became only the second English team to lift the trophy.
Liverpool made seven changes but still romped to a 3-0 win at Bournemouth after goals from Alex Oxlade-Chamberlain, Naby Keita and Mohamed Salah extended their Premier League lead to 11 points over Leicester City.
Chelsea battled to an incident-packed 4-4 draw with nine-man Ajax Amsterdam in the Champions League on Tuesday, with the hosts fighting back from 4-1 down after scoring two own goals.
Fans have repeatedly subjected players of sub-Saharan African origin to racist chants - With recent cases targeting Mario Balotelli, Kalidou Koulibaly, and Romelu Lukaku.
Team secures third place at the Rugby World Cup bronze final with a comfortable victory over Wales.
Bulgarian police detained four people in connection with racist abuse faced by England's black players during a Euro 2020 qualifier in Sofia with more arrests likely, the country's Interior Ministry said
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