Hamilton dominates Monza practice

Mercedes drivers Lewis Hamilton and Nico Rosberg are in a league of their own in first practice at the Italian Grand Prix.

Using an upgraded engine to spectacular effect, Hamilton was 1.588 seconds faster than the rest of the field - headed by Ferrari's Sebastian Vettel.

The world champion was 0.463secs ahead of team-mate Rosberg, who he heads by 28 points in the championship.

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