Amnesty International released a statement after Russian Federation beat Saudi Arabia 5-0 in their opening game condemning Tatchell's arrest as "outrageous".
'You know that we have very warm feelings for you, but I think you will understand that I can not wish success to your team, ' Putin told Crown Prince Mohammad bin Salman Al Saud on Thursday. Putin then reached over to shake the prince's hand.
The best player on the pitch, though, was central playmaker Aleksandr Golovin, who was rewarded for his offensive sparkle with a wonderful goal from a free kick just before the final whistle to cap off the scoring.
"We have spoken to the local authorities and are pleased to confirm that he is well and has now been released", the British Embassy to Russian Federation said on Twitter.
"I could never have dreamed of anything like this".
Russian Federation even overcame the setback of losing midfielder Alan Dzagoev to a 22nd-minute injury by scoring again through Denis Cheryshev (twice) and Artem Dzyuba to record a convincing victory. Golovin added the fifth from a free kick.
It featured British singer-songwriter Robbie Williams performing some of his most successful singles including "Let Me Entertain You", "Feel" and "Angels".
Putin has made no secret about his desire for success in worldwide sports, especially at the Olympics.
"Getting arrested is standard for Russians who protest for LGBT+ rights or against corruption, economic injustice and Russia's annexation of Crimea and its bombing of civilians in Syria".
Saudi Arabia's route to the knockout round is much more hard.
Russian Federation can now prepare to face Egypt next week full of confidence while Saudi Arabia need to find instant improvement if they are to avoid further embarrassment against Uruguay.
Russia's players were significantly taller and heavier than the Saudis, a help when challenging for the ball and when the penalty area was crowded.
Alan Dzagoev had been at the heart of things in their midfield promptings but had to go off after pulling a hamstring in the 23rd minute.