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.
Although Jurgen Klopp's men were relentless, Arsenal had their chances and Alisson had to be at his best to twice deny Lacazette who had been put through on goal.
Due to the COVID-19 pandemic, almost all major domestic and international sporting events were rescheduled or canceled in the first half of the year. People were reluctant to go outside, and most sports companies struggled to do business. Some didn't survive.
Suarez began his cameo with a pass to set up Marcos Llorente to make it 4-0 before heading home Atletico's fifth and then hitting their sixth after Jorge Molina had scored a consolation goal for Granada who had won all of their games before travelling to Madrid.
However, there was also good news.
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.
Eibar's 2-1 defeat to Athletic Club leaves Jose Luis Mendilibar's side with just one point from their first three games of the season and after seeing them fail to create any chances from open play against their neighbors you fear for their future.
Celta held Barca to a 2-2 draw last season, with Iago Aspas netting a late equalizer and the now departed Luis Suarez scoring twice for Barca, so Thursday will be an indication as to how the two teams have evolved in the last three months.
Moises Lima Magalhaes of Luneng could have netted the winner in the 83rd minute, but his powerful long shot was denied by the left bar after hitting Zhang Jinliang of R&F.
The Tri beat Guatemala 3-0 in a friendly at Azteca stadium on Wednesday - the first outing of the year for both teams.
The 62-year-old didn't exclude himself from the solution after leaving RB Leipzig eight weeks ago.