Valtteri Bottas says he is looking forward to his return to the Circuit of the Americas a year on from scoring his first F1 points for Williams, the Finn's fortunes having come on a long way since that day twelve months ago.

Hampered by an uncompetitive car during his maiden season of F1 racing, it took Bottas until the penultimate round of the season in Texas to get on the scoresheet for the first time, a result that ultimately enticed Williams to retain him for the 2014 season.

Since then, Bottas has taken full advantage of the team's surge in competitiveness this year and returns to the United States Grand Prix having scored in all-but-two races in 2014 and notched up five podiums.

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Currently fourth in the overall standings, just two and four points ahead of Fernando Alonso and Sebastian Vettel respectively, Bottas is looking forward to rekindling some happy memories around the COTA circuit, even if he is now hoping for podiums rather than points.

"Austin is a really cool track, one of the best on the calendar. The city is nice, the fans and atmosphere are great, so it's one of the best places of the season to go to. I have good memories from there as I got my first points in Formula 1 in Austin last season.

"We are definitely targeting to be on the podium again and extend the advantage we have on Ferrari in the Constructors' points. Everyone is feeling positive about Texas, so it should be fun."