Valtteri Bottas went some way to making up for the relative lack of running completed by Williams on day one of the Red Bull Ring F1 test by posting the fastest time of the final morning.

Although the Finn did not run much in the third hour leading up to lunch, he emerged with a time of 1m 10.029s to take nearly a second off day one's best effort as the nine teams present enjoyed better conditions than the rain which prevented any running in the same session on Tuesday.

Once Nico Rosberg had finished setting the initial benchmark some 30+ seconds off Pascal Wehrlein's day one target in the same car, Bottas got to work, dismantling the time on Pirelli's soft and supersoft tyres, eventually ending his programme a couple of tenths ahead of the young German, who reverts to Force India for day two. Rosberg, having shed the responsibility of running an early aero programme, also joined the fray, initially threatening Bottas' top spot before his times tailed off at 1m 10.684s as he too sat out the final part of the morning.

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Wehrlein picked up the development of new parts begun by Esteban Ocon on Tuesday, running the new VJM08 nose briefly seen on day one. He picked up his pace in the final hour, overtaking Rosberg and getting closer to Bottas' benchmark time.

Fernando Alonso went fourth fastest despite completing a session-low 18 laps in the McLaren, which sported a new shorter nose for the first time. The Spaniard narrowly missed joining the top three in the 1m 10s bracket, and was only a tenth clear of Sauber's Felipe Nasr and Lotus' Jolyon Palmer, who went quietly about their work before ending up just 0.06s apart.

Esteban Gutierrez made a slow start to the session as he ensured that Ferrari's rebuild of the car crashed by Antonio Fuoco was sound. The Mexican eventually wound up seventh overall, with 27 laps to his name.

The two busiest men were also the slowest of the morning, with Daniel Ricciardo and F1 debutant Marco Wittmann completing 75 and 71 laps for Red Bull and Toro Rosso respectively. Ricciardo was only a tenth or so off those immediately ahead of him, while Wittmann ended his first session in an F1 car on 1m 12.941s, having sporadically mixed it with the bigger names in the field.