Valencia's 4-2 win at home to Levante was a major boost for Javi Gracia's side after a difficult summer and they will look to keep that positive feeling going even though Gracia continues to ask the board for new signings.
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.
"He has the speed, he can combine, can defend, can press. It makes it just more unpredictable and gives us real options for different systems because he can play pretty much all three positions up front in a 4-3-3. If we play with four midfielders he can play both wings," said the German coach.
But there was no place for striker Edinson Cavani, who has yet to find a new club after parting ways with Paris Saint-Germain in June. The 33-year-old has not played since March.
"We had chances to score in the first half, but we missed all of our good chances," Tuchel said.
There were also seven goals in the game between the newly-promoted pair of Leeds United and Fulham, with Leeds winning 4-3 to claim their first points of the season.
Aubameyang, 31, joined the Gunners from Bundesliga side Borussia Dortmund in 2018 and has since made 111 appearances and scored 72 goals.
The Israeli club scored the first goal in the 50th minute, with a successful penalty kick by midfielder Dan Biton, after the visitors' captain Syarhey Kislyak pushed Maccabi's Dor Peretz in the penalty area.
Esteghlal is currently headed by interim coach Majid Namjoo Motlagh at the ongoing ACL competitions. Enditem
"The situation was complicated so it was important to win tonight. It's hard, we created some chances, but we're not 100%."
The following games conclude the first round on Sunday: RB Leipzig face Mainz, while Wolfsburg host Bayer Leverkusen. Enditem