It's not unusual for the Manchester derby to be a feast or famine affair, either everything happens or you see less action than yet another rained off Test match at Old Trafford.
That alone makes it an unpredictable affair, but given the erratic form of both teams ahead of Saturday lunchtime's kick off, it's difficult to pick a winner from Manchester United and their local rivals Manchester City.
Both have wobbled recently. United unforgivably capitulated 5-0 at home to Liverpool a fortnight ago, but then turned up at Tottenham to roll them over 3-0.