- German Grand Prix
Yamamoto replaces Chandhok
Yamamoto, who reportedly has $5 million in sponsorship backing, replaced Bruno Senna with at the British Grand Prix.
And the 28-year-old Japanese driver was given the go ahead to race again in Hockenheim after the HRT team issued a statement on Friday.
"After Sakon Yamamoto gave a very positive performance in Silverstone, the team has decided to give the Japanese driver another opportunity to drive the car alongside Bruno Senna," said the team statement. "Karun Chandhok is still part of the Hispania Racing, HRT F1 Team family and is likely to be in the car at some later races this season."
HRT's test driver, Christian Klien, also said on Friday that HRT from now on will "nominate any of the four drivers for the race seat".
"And all four drivers are treated equally. After that, the decision rests with the team," Klien told motorline.cc.
Yamamoto said: "The last race weekend was very exciting for me. Now, the team has given me another chance to race on Sunday and I will do my best to prove that it was the right decision.
"I have a lot of good memories of the circuit in Hockenheim. I like the track layout with the passing point at the end of the long straight and also the Stadium sector, which is very challenging. There is always a nice atmosphere with the spectators at the grandstands and I am always looking forward to come back to Hockenheim. Compared to Silverstone, I think we are more competitive and we can achieve a good result again."
Team boss Colin Kolles added: "After the solid result we could achieve in Silverstone, we want to go on like this and show a good performance again."