To Portsmouth.At Old Trafford.And they got themselves knocked out of the FA cup in the bargain.Sulley Muntari gave Portsmouth a 1-0 victory.And the hapless goalkeeper in question was Rio Ferdinand.This becauseEdwin van der Sar was injured and substitute goalkeeper Tomasz Kuszczak got a red card.Man U will rue the billion chances they missed and Portsmouth have beaten them at Old Trafford for the first time in 50 years.Details…