Koeman changed the style Barca used under Quique Setien, adapting a 4-2-3-1, with Antoine Griezmann leading the line, Frenkie de Jong and Sergio Busquets in the midfield holding roles and Messi, Philippe Coutinho and Ansu Fati in an attacking line of three.
Acheampong scored a goal in the 81st minute, but it was ruled out for offside.
Organizers had discussed several measures to hold the annual event in a safe manner, such as staging only the full 42km race and not the shorter distances, reducing the number of participants and having all participants undertake a COVID-19 test before the race, explained a SEGAS statement.
"Elite edition of the Valencia marathon and half marathon will be held on Dec. 6, we can now confirm the names of the first male and female athletes who will seek to achieve the most ambitious sporting goal possible by trying to set new race records," the organizers said in a statement.
The Serb frequently used drop shots throughout the game, just as he did during his Rome title run last week.
Inter were three goals up in the 28th minute as Lukaku bagged his second after Roberto Gagliardini had smashed in a volley.
The 41-year-old coach was in charge of Bundesliga outfit Augsburg from December 2016 to April 2019, before coaching Germany's U-20 and U-18 national teams.
"The sales of fitness equipment has been increasing. According to the Suning platform, sales of dumbbells, hula hoops and yoga mats increased by more than 300 percent over the same period of 2019," said Liu Fumin, director of the Department of Sports Economics of China General Administration of Sport.
The 27-year-old Mokua, who holds personal best of 1:02:50 in the half marathon, suffered four broken ribs and a double fracture on his left hand during the incident in Nyahururu, some 190km from the capital Nairobi.
Celta meanwhile will put their faith in Aspas, who has already scored three goals this season and will be a handful for the Barca back line.
The "TSG" should have added another goal to their lead but neither Christoph Baumgartner nor Kramaric were able to beat Neuer at the half hour mark.