Venue: Doha Golf Club Dates: 3-6 February Coverage: Latest scores and daily reports on BBC Sport website; reports on BBC Radio 5 live;
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-7 M Brier (Aut) -6 D Fichardt (SA) -5 T Bjorn (Den), R Karlsson (Swe), R Finch (Eng) -4 T Aiken (SA), P Lawrie (Sco), R Goosen (SA)
Selected others: -2 L Oosthuizen (SA) -1 I Poulter (Eng) +2 S Garcia (Sp) +3 M Kaymer (Ger) +4 L Westwood (Eng), R Fisher (Eng) +5 P Casey (Eng)
Westwood suffered at the Doha Golf Club
World number one Lee Westwood missed his first cut in more than a year after slumping to four-over par at the Qatar Masters with a second-round 75.
The Englishman started the day two over par but dropped four shots on the front nine, rendering a birdie at the 18th useless as he missed the cut by a shot.
Westwood could now lose his number one ranking should Germany's Martin Kaymer finish first or second in Doha.
Kaymer, though, is three over, 10 shots off the halfway leader Markus Brier.
The Austrian fired a flawless round of 66 to finish the day seven under, a shot clear of South Africa's Darren Fichardt and two ahead of Dane Thomas Bjorn, Swede Robert Karlsson and Richard Finch of England on five under.
Brier will have his work cut out protecting that lead, however, with the likes of former Open champion Paul Lawrie (-4), two-time US Open winner Retief Goosen (-4) and 2010 Open champion Louis Oosthuizen (-2) among the chasing pack.
England's Ian Poulter, too, is in contention after an up-and-down round including five birdies, two bogeys and a double bogey as he finished the day two under.
I'm going down to Dubai to get on to the practice range and try to get some kind of rhythm back in my game
Westwood, however, will not trouble Brier after missing his first cut since bowing out after just two rounds of the Abu Dhabi Championship.
Needing an eagle at the last to stay in the tournament, the 37-year-old watched in despair as his 25-foot putt stopped right on the edge of the hole without dropping for a two on the par-four 18th.
He will now head to Dubai for a week's practice before the next European Tour tournament there, the Dubai Desert Classic, starting 10 February.
"I just didn't play very well today and that's why I needed to eagle the last," he said. "I put it all down to early-season rust.
"But I'm going down to Dubai to get on to the practice range and try to get some kind of rhythm back in my game."
Other big names to miss the cut included Sweden's Henrik Stenson (+6), who threw his chipper into the water after a poor shot on to the green at the last, Paul Casey (+5) and Ross Fisher (+4).
World number two Kaymer, meanwhile, failed to make too many inroads on the leaders in windy conditions following his first-round 77, despite a flawless two-under second round of 70.
It means the 26-year-old needs a complete turnaround over the weekend at the 7,388-yard Doha layout if he is to finish first or second and therefore overtake Westwood at the top of the rankings.