Being 4-0 up at half time meant the game was effectively over and Arsenal were very much still in the title race.
Two second half Joey Barton penalties, a goal from Leon Best and a 87th minute screamer from Cheick Tiote made the impossible a reality and Newcastle came out with a point.
Arsenal never recovered from the defeat and their title aspirations disappeared almost as quickly as their 4 goal lead.
Source: DSG