Red Bull set the pace in Australian Grand Prix testing, but McLaren struggle badly
But defending champions come under fire as Horner takes dig at Mercedes's new recruit Lewis Hamilton
The British driver's career with Mercedes got off to a bad start when he crashed during testing in Jerez on Wednesday
Will it be Sebastian Vettel or Fernando Alonso? All will be decided at season's final race in Sao Paulo
Both drivers express frustrations after another bad weekend for McLaren
German driver will team up with Fernando Alonso when Red Bull contract ends
Hamilton's rant at team-mate was 'childish and embarrassing', but does he have a point?