4 Winners and 3 Losers from pre-season testing – Who's looking good ahead of the season-opening race?

Getting a read of who’s hot and who’s not at pre-season testing is always a tricky business – and this year was no different. While some teams were super productive, for others testing was a bit of a grind. For the first time this season, we’ve picked out four winners and three losers from three days of running in the desert at the Bahrain International Circuit…