The Baggies opened the scoring thanks to new signing Grady Diangana in the 10th minute, but Calvert-Lewin leveled with a back heel that was given after consultation with VAR.
Hertha opened the scoring as Peter Pekarik had time and space to nod home Maximilian Mittelstadt's pinpoint cross in the 42nd minute.
Barca will play newly promoted Elche in the Camp Nou on Saturday a week before they kick off their La Liga campaign at home to Villarreal.
Brazil has reported more than 135,000 COVID-19 deaths and over 4,497,000 confirmed cases of the virus. Enditem
This week saw Koeman's men beat Girona 3-1 in another preparation game, but Saturday will be their last chance to get things right before things are for real next week.
His podium finish caught the eye of the officials of the International Association of Athletics Federations (IAAF), now renamed World Athletics, and he was selected to join their High Performance Training Centre in Dakar, Senegal.
"Players like Riqui have something special, but it is going to be very complicated for him here as there is a lot of competition. I have told him that he has a future here, and we will think about what is the best way to succeed at Barca," he added.
Any deal would almost certainly see Real Madrid continue to pay part of the wages of a player whose relationship with coach Zinedine Zidane has broken down completely in recent months. Enditem
While the Munich side is making every effort to mention as many serious rivals as possible, nearly all of the first tier's coaches name Bayern as the big favorite.
BUENOS AIRES, Sept. 18 (Xinhua) -- Uncapped Aston Villa goalkeeper Emiliano Martinez has been named in Argentina's squad for their opening 2022 World Cup qualifiers against Ecuador and Bolivia next month.
He said Schalke's squad needs to forget about last season's disappointments and try to start afresh. "There is no specific goal for the new season besides doing better," the attacker said.