So at some point, the prevailing formation in the early days of soccer evolved from the 2-3-5 formation:
-11—10—9—8—7-
—————————
—-6——5——4—-
—————————
———3——2——-
—————————
————-1————
To this, the famous “W-M”:

The father of the W-M was the famous Herbert Chapman, quite possibly Arsenal FC’s most accomplished manager. The proximate cause was the liberalization of the offside rule in 1925. Prior to the 1925-26 season in the English league, in order to avoid being in an offside position, there had to be three opposing players between you and the goal. For the 1925-26 season, the rule was changed so that only two players had to be between you and the goal. The change was made quite explicitly to increase goal scoring, which it did (increasing from 4,700 goals to 6,373 goals). Football managers realized that they had to adapt their formations to change.
Chapman wasn’t the first to make the first change, which was to take the No. 5, or Centre-half, and withdraw him into a purely defensive role between the fullbacks (No.’s 2 and 3). Chapman was the first to make the second change: taking both inside forwards (No.’s 8 and 10) and dropping them into deeper roles. The result is the “W-M” formation shown above. The W-M became the dominant system of play for decades.

![fyarsenal:
“It’s amazing if you play with him [Robin], even in training. I knew before that he was a quality, world-class player and that technically he was really good. He’s scoring goals now and his game is more complete. He’s fit, playing every game, scoring goals and for the team that’s really important. Personally I’m really happy to be playing with him every game.”
-Thomas Vermaelen](http://24.media.tumblr.com/tumblr_lwcuttSnMq1qm0rluo1_1280.jpg)



