Having to play every two to three days after only one week of rest "is the biggest challenge all of us have had to face in their career so far." Trying to continue at the highest level requires going beyond physical and mental limits as fan expectations fans are growing.
Now, the 29-year-old says he is fully fit again and ready to shine for the Albiceleste, should he be given the chance.
Kurt Zouma completed the scoring on 66 minutes, as his low shot from a corner was deflected past the unfortunate Ryan.
Will Schalke 04 and Werder Bremen experience a change around after both fallen giants only narrowly survived a terrible last season?
Fresh from his early goal, Salah looked in fine form, and added his second and Liverpool's third when he crashed an unstoppable half-volley past Illan Meslier in the Leeds goal to make it 3-2 to the champions at half-time.
A new pitch will be installed following Wednesday's Copa do Brasil match between Fluminense and Atletico Goianiense, according to venue operator Maracana SA.
New signing Donny van de Beek came into the game as a substitute and gave United a chance with a goal on his debut, but Zaha's excellent second strike five minutes from time condemned them to defeat.
The decisive point will be if the reluctant Swiss can set his bunch of youngsters on fire and at the same time close doors at the back.
Former Birmingham midfielder Jude Bellingham is said to be a decisive factor as the 17-year-old impressed with his maturity when operating as a box-to-box midfielder.
Maximilian Eggestein's moment of madness allowed Vladimir Darida to pass into the path of Dodi Lukebakio, who finished off a fast break after beating Jiri Pavlenka from the edge of the box in the dying seconds of the first half.
Saturday's next game is a rescheduled fixture, which sees Osasuna return to their remodeled El Sadar Stadium to face a Getafe side playing their first game of the season.