The Japanese driver has qualified in the top 10 for the last three races, outpacing his more experienced team-mate Daniel Ricciardo.
He secured a seventh-place finish in Australia, helped by the retirements of Max Verstappen and Lewis Hamilton and a penalty for Fernando Alonso.
Tsunoda then followed up with 10th on merit at his home race in Suzuka, making up for a poor initial start by performing some spectacular passing moves and benefiting from a quick stop when a gaggle of cars pitted at the same time.
“He said he went out with the samurai spirit,” Bayer told Motorsport.com. “I think it was an amazing achievement for him in front of the home crowd and Honda.
“Somebody told me it is the first time [for a local driver] since 2012 when [Kamui] Kobayashi scored a point in a Japanese GP, so a great achievement from Yuki, honestly.
“It was an immaculate drive from him, and he was managing the tyres when he had to, he was pushing when he had to. He had great support from the team with that pitstop. Overall very, very happy with him."
Source: Autosport