UPDATE 3-Soccer-Barcelona hit Real for six to close in on title

* Champions Real Madrid crushed 6-2 at home

* Barca seven points clear with four matches left

* Third-placed Sevilla win 2-0 at Villarreal

(adds late results)

By Iain Rogers

MADRID, May 2 (Reuters) - Double strikes by Thierry Henry and Lionel Messi powered a rampant Barcelona to a 6-2 thrashing of champions Real Madrid in a spectacular Primera Liga clash at the Bernabeu on Saturday.

The victory meant Barca, chasing their first title in three years, extended their lead over second-placed Real to seven points with four games left.

Pep Guardiola's team will be champions if they win next Sunday at home to Villarreal and Real lose at fourth-placed Valencia on Saturday.