* Ibrahimovic scores one, sets up another
* PSG still lead Monaco by eight points
* Berbatov on the spot as Monaco beat Sochaux (Recasts after Monaco win)
By Julien Pretot
PARIS, March 8 (Reuters) - Zlatan Ibrahimovic was again the chief tormentor as French champions Paris St Germain won 3-0 at Bastia to stay eight points clear at top of the Ligue 1 on Saturday.
Ibrahimovic opened the scoring with a powerful header into the top corner in the sixth minute before his clever backheel set up Ezequiel Lavezzi for the second goal 13 minutes later.
The Sweden international set up Lavezzi again for the third two minutes from time.
The result put PSG, who take a 4-0 lead into the return leg of their Champions League last-16 tie against Bayer Leverkusen at the Parc des Princes on Wednesday, on 67 points from 28 games.
Second-placed Monaco later beat second-bottom Sochaux 2-1.
Dimitar Berbatov put the hosts in front after six minutes, tapping in at the far post from Layvin Kurzawa's cross.
James Rodriguez made it 2-0 from the penalty spot after Berbatov was brought down 10 minutes into the second half.
Edouard Butin scored a consolation goal in the 84th, just before Jordan Ayew was sent off for kicking Andre Raggi on the leg.
In Corsica, PSG coach Laurent Blanc decided to rest key players following international duty, with France midfielder Blaise Matuidi and Brazil centre back Thiago Silva both starting on the bench.
It did not prevent the visitors from virtually wrapping up the points in the opening 20 minutes.
Following a fine one-two with Lucas, Ibrahimovic beat Yannick Cahuzac in the air to head home from the Brazil forward's cross.
The Swede was at it again when his backheel in midfield split the Bastia defence, leaving Lavezzi free to run through on goal unchallenged and beat Jean-Louis Leca from close range.
Lavezzi then converted an easy chance after collecting Ibrahimovic's knock-down and finding the net after a defensive blunder from Sebastien Squillaci.
On Friday, Olympique Marseille's Champions League challenge suffered a setback when they lost 1-0 at home to Nice to stay fifth, six points adrift of third-placed Lille. (Reporting by Julien Pretot; Editing by Ed Osmond)