Bielsa’s 3-3-1-3 is an inherently attacking formation that aims to take the game to his teams opponents, press and defend high up the pitch, and stretch the play as wide as possible when in possession. His back three and the holding midfielder are essentially the four defensive-minded players, whilst the two wing-backs surge forward whenever possible, trying to create overloads against opposition full-backs, and also venturing into more central attacking positions to provide a goal threat.
Bielsa never changes his favoured un enganche y tres punta (one playmaker and three fowards) system. The forward trio stretch the opposition defence – the wingers start from very wide positions and open up gaps that are exploited by the centre-forward. For such an unusual formation and such a specific style of play, the most surprising thing about Bielsa’s team selections is that he has always found various players who fit into the system seamlessly, especially in defence. Its not uncommon to see regular players being played out of position, nearly all the time. Bielsa is happy to chop and change between games and to deploy individuals in a variety of positions. Usually when he's playing against an opposition with 2 striker, he will change to the 4-2-3-1.
In terms of how the midfield shapes up; it is generally laid out as a diamond and is never flat, which means that the wide-of-centre players do not necessarily have to be wide midfielders or wing-backs, though some indeed are. Overall, Bielsa likes to have a mix – and so, beside the obvious presence of a holding player, it is common to see a wing-back/wide-midfielder on one side whilst a more well-rounded midfield player can take the other flank. The idea here being that the playmaking duties will not be the exclusive preserve of the No.10 lest that guy’s creativity be stifled by close marking. So the wide players can indeed push out to support the outside-forwards and of course to assist the outside centre-backs in the three-man defence when the opponent is raiding down that particular flank. Another result of having that diamond is that the wide midfielders do not have to overlap the wingers, but instead can surge diagonally through the middle to latch on to second balls; so in this sense they are like box-to-box midifelders.
The 3-3-1-3 formation changes so quickly and so significantly because there are a lot of players that can play two or even three positions in that scheme. Bielsa rarely uses pure defenders in the back line. He mostly uses defensive midfielders on that position for two reasons: (a) They are quick on covering defensive positions and (b) because they can pass the ball better through the rival attackers, and can assume advanced positions. this system changes depending on the opposition formation. If the opposition are playing with three attackers, Bielsa plays with four in the back. If they play with one attacker, there is only the need for two centre-backs. Bielsa doesn’t ever move the three attackers nor the attacking midfielder in front. They are focussed upon starting the defensive pressure at the beginning of the rivals attack.
I seriously dont know how the fuck he is even going to try to use that system here...seriously! With the players that we have, it just aint happening. The way our players are breaking down, i just dont see how they can play such a high-intesity formation for the whole season! Definately not one for an aging squad.
MINDFUCK!