Toyota's Ricardo Zonta was the quickest of the test drivers finishing in 14th place.

BBC: 1 M Schumacher (Ferr)

Udal ended up without a wicket, while England hopeful Steven Finn did little to boost his Test hopes, finishing with 2-81.

BBC: Stephen Peters sees Northants to six-wicket win

Four years on, O'Driscoll is back for more Test action - and Roberts will be playing alongside him, rather than just finishing his A levels.

BBC: Roberts loving 'crazy' rugby rise

In the Olympic two-man test race in February at Sochi, Cory Butner and brakeman Johnny Quinn were the highest-finishing Americans in ninth, more than a second off the gold-medal pace of Beat Hefti and brakeman Thomas Lamparter of Switzerland.

WSJ: New Bo-Dyn 4-man bobsled could save US team