Mercedes driver Lewis Hamilton got the better of runaway Formula One championship leader Sebastian Vettel by setting the fastest time in Friday's practice for the Korean Grand Prix.
Saturday's qualifying again shapes up as being a shootout between Mercedes and Red Bull, with Hamilton's teammate Nico Rosberg and the Red Bulls of Vettel and Mark Webber all within two-tenths of a second of the leading time.
Red Bull and Mercedes have between them taken every front-row grid spot for the past 10 races.
''It's been a good day,'' Hamilton said. ''I feel like I have a bit of a better foundation this weekend. I can't remember the last time I had a really strong Friday.''
Ferrari's Fernando Alonso, who is in second place in the drivers' standings - a fading 60 points behind Vettel - was only seventh fastest, seven-tenths of a second off Hamilton's time
In the morning session, several drivers ran wide off the unrubbered and dusty surface, with the major incident seeing Lotus' Kimi Raikkon...