6 great sport channels
Football, Rugby, UFC, GAA
All free when you join eir Broadband
Andy Carroll netted a hat-trick on his first Premier League start since January, as West Ham drew 3-3 with Arsenal in the last London derby at Upton Park.
But the draw dashes West Ham's hopes of making the top four and the Champions League positions, and all but ends Arsenal's admittedly optimistic title ambitions.
West Ham, who move to Stratford's Olympic Stadium next season, remain in sixth place in the Premier League table, two points behind fourth-placed Manchester City, who meet West Brom at the Etihad Stadium on Saturday evening.
Thiird-placed Arsenal now lie 10 points behind Leicester City with six matches of the season to go.
Arsenal, who should have been a goal down just before the quarter-hour mark when Manuel Lanzini was incorrectly ruled offside, took the lead on 18 minutes when Mesut Ozil coolly stroked Alex Iwobi's through ball past Adrian.
And the Gunners seemed to be cruising when they went 2-0 up on 35 minutes, after Alexis Sanchez had deftly lofted Iwobi's pass over Adrian.
But Carroll transformed the match with three goals in nine minutes and 50 seconds to chalk up his first Premier League hat-trick since Newcastle's 6-0 win over Aston Villa in August 2010.
The first on 44 minutes was a Carroll classic, a thudding header from six yards from Aaron Cresswell's cross from the left that left Arsenal goalkeeper David Ospina rooted to the spot.
Then, in first-half injury-time, Carroll levelled it a 2-2 with a drilled shot after Gabriel could only half-block his first effort following Mark Noble's cross from the right flank.
And Carroll, making his first start for three months following injury, capped a dream comeback with a third on 50 minutes with another emphatic header from Michail Antonio's cross.
But Arsene Wenger's side hit back to level with 20 minutes remaining, as Laurent Koscielny swept home Ozil's cross, via a deflection off Danny Welbeck, past Adrian from close range.
By Nick Royle.