Barca are still working in the transfer market, however, with Ousmane Dembele now linked to a move to Manchester United as the club chases Memphis Depay - a personal request of Koeman's.
"The question is how can you manage the club's return to the top eight of German football after a formative figure such as Clemens Tonnies has left," he said.
Alba increased the lead to 12 points early in the second quarter, but a remarkable 11-0 run, led by Scottie Wilbekin and Othello Hunter, brought Maccabi back to the game.
The 12-time champion also improved his record at Roland Garros to 95-2 with this win.
"In fact, we're still waiting for legal guidelines to run the games," Dortmund's sports director Michael Zorc complained.
All eyes were on Messi after a summer in which he had asked to leave the club and only two days after he had criticized the departure of Luis Suarez, but Fati was the star of the show.
The former world No. 1 is set to face a tougher challenge in the second round against 2017 champion Jelena Ostapenko of Latvia, who knocked out American Madison Brengle 6-2, 6-1.
Valencia took the lead thanks to Daniel Wass' free kick from the touchline which evaded everyone on its way into the net, but Huesca got a well-deserved equalizer when Dimitrios Siovas headed home following a corner.
With younger players getting more opportunities, the CSL has witnessed many success stories during the first stage. According to data from the first round, compared with the first 14 rounds of the 2019 season, coaches have increasingly been putting their trust in the youth with the total playing time of U23 players has increased by 6,822 minutes.
"If we don't have advantage on strength, we should be much more confident than our opponents, and showing a stronger will to win," he added.
"It's our 10th straight year at the Sport Show," said Airgoal's Liang Jiahua. "We are bringing some new products here and the sales are satisfactory."