Carlos Sainz says he can take satisfaction from scoring points on his Formula 1 debut, but admits he is frustrated not to have finished higher than ninth after a poor pit-stop cost him dearly in the Austrialian Grand Prix.

The Spaniard was a star performer during qualifying after placing the Toro Rosso eighth on the grid - which duly became seventh when Valtteri Bottas withdrew -, but marked his first start by running too deep into the braking area and making contact with Kimi Raikkonen, which indirectly contributed to Pastor Maldonado crashing out.

Nonetheless, Sainz survived the melee to run as high as fifth at one stage, only to slip to seventh as the pit-stop window opened. However, the FR3.5 champion's hopes of consolidating his position were scuppered when a sticking left-rear wheel cost him more than 20secs.

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Re-joining outside the top ten, an aggressive strategy would get Sainz up to eighth again, even if he would then be passed late on by a charging Marcus Ericsson.

Even so, despite the frustrating circumstances of his race, the Spaniard says he cannot be too disheartened to join a select group drivers to score points on their F1 debut.

"I'm very pleased to have scored my first ever Formula 1 points in my debut race here in Melbourne! Obviously, we know there was much more potential than a P9 but, all in all, if we take into account everything that happened, we need to stay positive, keep improving and believing in ourselves because we know we can do better.

"I really enjoyed today's race, I did a great start and I liked the battles into turn one, even though I was maybe a bit too optimistic there but I learned my lesson. The slow pit-stop was a tough moment for the whole team, as we were in a very good position and lost quite a lot of time.

"From then onwards the race changed and it was just a matter of bringing it home without problems. I'm happy with my first race weekend, I feel that I've achieved all my objectives and I look forward to the next race in Malaysia in two weeks' time."