Marcus Ericsson claims he was left "fuming" inside his Sauber car under the impression that his result at the Mexican Grand Prix was being sacrificed for teammate Charles Leclerc.
Both drivers made it into the top 10 in qualifying on Saturday but knew a tough race lie ahead starting on the Hypersoft tyre compared to the Force India's and others behind on more durable compounds.
As a result, the Swede was put onto a longer first stint than the Monegasque to try and hold back some of the other midfield drivers trying to make their way through the field.
“The plan was just to help Charles’ race basically,” Ericsson said. “I was just sacrificing my race completely to help him.
"I wanted to box many laps earlier because I knew I was throwing away my race for the team and for Charles.
“I was really fuming in the car. I was really getting frustrated, in a nice way,” he added. “I know we have to work for the team’s best, but for me it was a bit extreme.
“I’ve always done everything for the team, I always put the team first and I think that’s one of my abilities that people value a lot and I will always do that.”
Ultimately, however, the concerns wouldn't be justified as Ericsson came home in ninth place while Leclerc finished only two places higher in seventh.
“It’s close with Bahrain but I would say it’s definitely up there. I think it’s one of my best races in F1 in general, I’m very proud of it,” he declared.
“The way I raced, keeping cars behind that were on fresher tyres, also sacrificing my strategy a lot for the other car and still managing to fight my way to P9, I’m very proud of that.
“To still finish ninth and beat all these cars was quite incredible."
Now Marcus has just two more races before he hands his seat to Antonio Giovinazzi in 2019 and will hope to score at least one more point to achieve his best ever season tally.
Lewis Hamilton will finish his F1 career
Mercedes' Toto Wolff hints at Red Bull t
Daniel Ricciardo joining Renault a year
McLaren & Williams failing because of th
Sergio Perez reveals why he snubbed oppo
Stefano Domenicali linked with Ferrari r
Mercedes boss recalls 'amazing' first me
Max Verstappen now faster than Daniel Ri
Pirelli unfazed by 2021 F1 uncertainty b
McLaren taking measures to improve relia
Esteban Ocon issue simple 2020 F1 ultima
Toro Rosso's 2019 car the first to pass
Max Verstappen enjoys 'constructive' day
McLaren sure Fernando Alonso exit won't
Sergio Perez: Racing Point the best team
Haas still has to 'earn the respect' of
Carlos Sainz already looking for long-te
Formula 1 star Pierre Gasly to partner L
Vietnam's F1 circuit developed using fir
Hockenheim & Monza proved 'things weren'
Honda defiant over claims of setbacks wi
Daniel Ricciardo will boost Renault but
Mick Schumacher knows rushing to F1 woul
Nico Rosberg names one quality Hamilton
McLaren appoint ex-Porsche WEC chief And
Williams: Robert Kubica a 'proper driver
Canadian GP promoter excited by Stroll/P
Ross Brawn: McLaren & Williams 'great te
Michael Schumacher pushed Mercedes to go
Esteban Ocon tips Racing Point to close
Mattia Binotto must deliver championship
Toro Rosso's Franz Tost has simple cure
UPDATED: Pneumonia not the cause for Nik
Sauber set their target after 'pushing l
Romain Grosjean: Haas 'scaring' Renault
Charles Leclerc a future star but 2019 n
Is the opposition to Hamilton/Schumacher
Sebastian Vettel plays down loss of deve
Charles Leclerc responds to Hamilton nam
Honda bringing Red Bull 'in the region'
Renault obliged to prevent Daniel Riccia
Ferrari confirm Maurizio Arrivabene's de
Valtteri Bottas sees positive outlook fo
Haas wary of 2019 F1 regulations but Wil
Ross Brawn admits growing 'impatience' a
Mercedes hoping potential to match Ferra
Sauber considering shakedown of 2019 car
McLaren sure Liberty will address rise o
Arrivabene out, Binotto promoted to team
Niki Lauda back in hospital after contra
Honda facing two significant problems ah
Williams chief Lowe reveals Ross Brawn's
Mercedes tells Valtteri Bottas what is r
Honda sees great benefit from increased
Lawrence Stroll reveals main reason for
Robert Kubica admits saying no to Ferrar
Nico Hulkenberg: The key area Ricciardo
Kimi Raikkonen not making Sauber predict
Lewis Hamilton never asked for Sochi tea
George Russell: The McLaren decision tha
Jean-Eric Vergne offers his prediction o
McLaren call on Liberty to ignore opposi
Daniel Ricciardo: Verstappen set for 'gr
Michael Schumacher a 'founding father' o
McLaren won't jump to early conclusions
Robert Kubica puts expectations in check
Michael Schumacher's ex-manager explains
Barrichello: The trait Charles Leclerc m
Vasseur: A 'spiral' of events attracted
Michael Schumacher's family reassure fan
Wolff: How 2016 tension led to current H
Kevin Magnussen considers Grosjean his f
Five things to get excited about in F1 2
Kimi Raikkonen sure Ferrari will achieve
McLaren hoping to secure arrival of key
Toro Rosso's eye-watering cost of crash
Daniel Ricciardo reveals Mercedes talks
Charles Leclerc admits one thing stopped
Fernando Alonso: Why Schumacher was my g
Hamilton showed an ability in 2018 only
Verstappen: The three words Ocon said af
Mercedes/Ferrari relationship 'difficult
Red Bull: Developing Honda relationship
Watching Bottas give up victory in Sochi
Racing Point reveal the biggest challeng
Red Bull admit Verstappen was 'probably'
Russell can make same impact as Leclerc
Verstappen digs at Hamilton: It's very e
Mercedes respond after more claims of an
Renault wants to win in F1 but 'at a rea
Brown expects continued McLaren support
Ocon satisfied he met Mercedes goals for
Verstappen lauds 'tough' father Jos for
Vettel calls for Ferrari team effort to
Webber warns Ricciardo: Red Bull could b
Wolff admits dismay upon hearing of Hami
Red Bull would consider Aston Martin/Le
Not even triple the budget could have fi
Mercedes: Ocon return a bigger priority
Ricciardo 'didn't care' about Verstappen