The German left Formula 1 at the end of a year ago having been replaced by Esteban Ocon at Renault for 2020, but of course previously spent five seasons at the team then known as Force India, initially as reserve driver before racing for them in 2012 and between 2014-2016.
Despite Perez having to miss at least one race - and probably two due to United Kingdom quarantine rules - Szafnauer defended his driver's actions between events as he returned to Mexico to visit his injured mother after her release from hospital.
He will miss at least the two races at Silverstone this weekend and next. I knew I had a great auto underneath me, and the team has done a fantastic job.
Reporting no symptoms of the virus, Perez said it was a reminder how vulnerable everyone is to becoming infected. I follow all the instructions from FIA and my team. After Hungary I took a private plane to Mexico to see my mum for two days because she had a big accident.
"And then I came back to Europe, the same way with all the protocols in place".
"He had just landed in Germany, I think he was flying there to do a sportscar test or something", Szafnauer said of his call.
As per the agreement between Mercedes and Racing Point, the reserve drivers of Mercedes- Stoffle Vandoore and Esteban Gutierrez are also listed as Racing Point's reserve drivers.
"Tough moments for me but I am sure I will come back stronger".
"The last 24 hours have been a bit special, insane and wild", Hulkenberg told Sky Sports after Friday practice.
"Having to find a replacement for Sergio at short notice is no easy task", Szafnauer said, "but in Nico we've got a fantastic supersub who the team knows very well".
"I was on my way to the Nürburgring for another racing project when the call from Otmar came". The Hulk' says he hopes for a speedy recovery of his buddy and former teammate Perez.
"Sergio is physically well and in good spirits, but he will continue to self-isolate under the guidelines of the relevant public health authorities, with safety the ultimate priority for the team and the sport", his Racing Point team said in a statement.
Hulkenberg is expected to continue for the team as long as Perez is out, but they were not able to confirm that on Friday.