I never had great belief in statistical analysis of football matches, particularly percentage possession, but recently reading that Spurs dominated possession when they got twatted 6-0 by Man City and yet only had 25% possession when they beat Man Utd 3-2 has finished me with taking any notice whatsoever of it.
Well, only if you take the simplistic view that winning the possession actually means something in of itself. Possession stats do indicate something - like any stat, skilful interpretation is key. It's no great surprise that we had lots of possession against City because (a) that's how we play now and (b) they just let us have the ball for the most part and hit us with quick, incisive moves. Or waited for us to fuck up. We actually didn't play particularly well when we beat Man U, but hit them with quick, incisive moves - thanks to Bale and Vertonghen in particular.
The thinking is that if you retain the ball well, then you're more likely to create opportunities to score and the oppo - starved of the ball - is less likely to score. Nowt wrong with that, and you're going to want to see regular high possession stats if that's the way you want to play. If you want to analyze the game further you've got to watch the bloody thing. I've got about as much patience with people who dismiss these stats out-of-hand as those who use them without any kind of context.