Pascal Wehrlein has revealed he had to be informed by Manor that he was P10 at the Red Bull Ring having "thought it must have been Perez."
The rookie driver converted his P12 on the grid into a P10 at the chequered flag on Sunday as he scored his first-ever World Championship point.
It was also Manor's first of this season, and only the second top-ten result in the team's history.
Speaking about his race, Wehrlein revealed he thought his chances were over when the Safety Car came out for Sebastian Vettel's accident on lap 27.
And although he was running as low as P17, he fought back to finish tenth at the chequered flag.
"In the middle of the race I was thinking the race was done because we were so unlucky with the Safety Car," he said.
"But I kept pushing and tried to manage my tyres because I didn’t want to stop again and in the end I was fighting with [Valtteri] Bottas and [Esteban] Gutierrez.
"The team told me you need to keep Gutierrez behind you. He is on fresh tyres but you need to keep him behind and you can maybe score a point.
"When I crossed the start/finish line, I looked at the screen and I saw my name in P10 and I thought it must have been Perez. I asked the team, I was lapped and I wasn’t sure what the rule is.
"So I asked if we managed to finish P10 or P11 and they said P10. Amazing."