Basically; 4-5-1's a packing the midfield strategy. A formation's purpose is determined by the strategy and the players used. 'nuff said. For example; you use slower; stronger players and a 4-5-1 formation is often considered as a more diplomatic way of saying "park the bus please". A 4-5-1 with faster players will result in a more dynamic interplay to rush forward in numbers and overwhelm the opposition to submission. That was Chelsea's way of playing (albeit termed as a '4-3-3'). Ferguson tried; in his 4-5-1 days, to play a fast 4-5-1 but he only had slow, strong players to fill up the middle of the park. Which led them to being neither here nor there and they had to resort to playing long ball and boring their opponents into submission. The adoption of a lone striker is generally seen as a gamble because you'll either have good days (ala Chelsea scoring > 2) or bad days (Chelsea the rest of the time).
4-4-2's a more generic formation and is more flexible than you think. Despite being seen as more attacking oriented; teams like Blackburn and Everton frequently employ a 4-4-2 with 2 defensive midfielders or 1 defensive and 1 attacking midfielder to help protect the defense, especially against stronger teams. Obviously a 4-4-2 formation is more balanced as you've got 'lots of room to play with; depending on what you want. This is why the 4-4-2's arguably the most popular formation in the world. You can mix and match to conform with what you want.
As for the strikers; most managers would go with a big-and-small combo or a fast-and-slow combo for variety, but we've seen in recent times; the modern striker's becoming a fusion of both. Players like Drogba, Podolski, Klose and the like are putting an end to the days of Hartson, Hutchinson, Koller and the like.
Personally; I've always liked a modified form of a 4-4-2. Basically; it's a 3-5-2 in which you've got 3 central defenders (which you can probably form with a sweeper), 2 wingbacks who'll roam into midfield, a defensive midfielder to shield the back 3 and 2 attacking minded midfielders to provide firepower for the 2 strikers. In order for this to work; you've got to have good fast technical players who can pass the ball quick. You can also easily switch between playing 3-5-2 to attack and playing 5-3-2 to defend by adjusting the wingbacks.
Having said that though; you can only talk 'bout playing formations if you've got players who're disciplined enough who're willing to play as a team. Even professionals make mistakes with regards to formation discipline and positioning.
This is a very risky formation though; but then again, i'm just a naive noob who likes good, attacking football.
This post has been edited by glozz: Jan 2 2008, 01:37 PM