Como v Sassuolo: official line-ups and Serie A squad registration
Before Como and Sassuolo can name a team sheet, each club must have registered its players under Italian rules. Those rules decide who can be picked, and the official line-up is the last step in that process.

The official line-up, defined
Google searches in Italy show strong interest in Como v Sassuolo, and especially in the "formazioni ufficiali", the official line-ups. The same searches also name Cesc Fàbregas, the former Spain midfielder who leads Como's first-team project. Many people treat the line-up as team news, but it is also an administrative document.
An official line-up is the list each club hands to the match officials before kick-off. It names the starting players and the substitutes available on the bench. A player can only appear on it if he has been properly registered with the competition. That registration comes from transfers, contract signings and loan agreements made weeks or months earlier. So the team sheet a supporter sees an hour before the match also shows what each club did in the transfer market. Every name on it is there because of a contract that was signed, lodged and accepted by the league.
This article does not cover who will play, how either side is doing or what the result might be. None of that is known here. It covers how a name gets onto the sheet at all.
Origins of the registration system
Italian football has always required players to be registered with the national federation, the FIGC. That registration ties a player to one club and makes him eligible for official matches. Over time the governing bodies added more layers. Fixed transfer windows limited when clubs could add players. European rules on homegrown players came in to encourage clubs to develop their own. Italy also kept its own limits on signing players from outside the European Union.
The squad list grew out of these pressures. Clubs no longer field whoever is under contract. They now have to name a limited senior group for the season. Some places in that group are reserved for players trained at the club or within Italian football, and younger players sit outside the cap. The aim was to stop clubs stockpiling senior players and to reward youth development.
Como and Sassuolo show two different ways of working within this system. Sassuolo is backed by the Mapei group and has long had a reputation for developing and selling players. That model depends on registration rules that reward clubs for training their own. Como's recent rise has been driven by ambitious ownership and an international recruitment strategy. That makes the limits on overseas signings and the senior-list cap more relevant to how it builds a squad.
The process today
The process runs in stages. First, a player has to be acquired. That can be a permanent transfer, a loan, a free signing after a contract ends, or a promotion from the youth sector. The contract has to be lodged with the league's competent bodies within the transfer window. Moves agreed after the deadline normally cannot be registered until the next window opens, although Italian rules have exceptions, such as for players who were already free agents.
Second, the club has to submit its squad list. Senior players over the age threshold count against a cap. The list has to include a minimum number of club-trained and association-trained players. If a club lacks enough of these, it cannot simply fill the gap with other players. The unused places are lost. Younger players can be added without counting against the cap, which is one reason clubs value academy graduates and young loan signings.
Third, on matchday, the coach chooses from that registered pool. The team sheet goes to the referee before kick-off, listing starters and substitutes. A player suspended under the competition's rules cannot be named. A player who is registered but left off the sheet cannot come on. A line-up error can lead to sanctions, which is why clubs treat the sheet as a formal document.
For a coach such as Fàbregas, all of this means tactical choices are made inside limits set by the club's recruitment. The tactical problem the two sides set each other is real. But each coach can only solve it with the players their club managed to register.
Common misconceptions
"Any player under contract can play." No. A contract alone does not make a player eligible. If he has not been included on the squad list, or was signed outside the window, he cannot be named on the team sheet, however fit or settled he is.
"Homegrown means Italian." The categories are about training, not nationality. A club-trained player spent qualifying years in that club's youth system. An association-trained player came through Italian football more broadly. A foreign player who joined an Italian academy young can qualify, while an Italian who trained abroad may not.
"Loans are a loophole." Loaned players still have to be registered. They count towards the receiving club's list in the normal way. The parent club cannot field them in the meantime, and Italian rules also limit how many players a club can have out on loan.
"The official line-up is a prediction." The line-ups released before kick-off are not forecasts. They are the submitted documents. Line-ups printed earlier in the week are only guesses by journalists and carry no official status.
"A big squad is always an advantage." Under a capped senior list, a large squad can be a burden. Players left off the list still have to be paid but cannot play, and that cost shapes a club's decisions about who to sell or loan out.
Where to look next
Readers who want to understand the mechanism properly should start with the primary documents rather than secondary summaries. The FIGC publishes the regulations covering registration, eligibility and transfer windows. Lega Serie A publishes the rules for squad lists and the official calendar for each season. UEFA's regulations explain how the homegrown concept works in European competition, which is a useful comparison for the domestic version. For the contractual side, FIFA's rules on the status and transfer of players set the international framework that Italian rules sit within. Club announcements are the reliable record of completed moves. Each club confirms signings and departures through its official channels once registration is done.
Frequently asked questions
What does "formazioni ufficiali" mean?
"Formazioni ufficiali" is Italian for official line-ups. It refers to the team sheets each club submits to the match officials shortly before kick-off, listing the starting eleven and the substitutes. They differ from the probable line-ups published by newspapers during the week, which are journalists' estimates. Only the official version decides who is eligible to take part in that match.
Can a newly signed player go straight into the Serie A line-up?
Only if the signing was completed and lodged within the transfer window and the player has been included on the club's registered squad list. The contract itself is not enough. If the paperwork was not accepted in time, or the list was already full, the player must wait until the club can register him under the competition's rules.
How does the Serie A squad list work?
Each club names a limited group of senior players for the season. Some of those places are reserved for players trained at the club or within Italian football. Players under the age threshold can be added outside the cap. If a club cannot fill the reserved places with qualifying players, it cannot use those places for anyone else.
Does a club-trained player have to be Italian?
No. Club-trained and association-trained status depends on where and when a player was trained, not on his passport. A foreign player who spent the qualifying years in an Italian academy can count. An Italian national who developed abroad may not count. The rule is meant to reward development, not to set quotas by nationality.
Why do squad registration rules matter for clubs like Como and Sassuolo?
They set the limits on every recruitment decision. A club that relies on developing and selling players benefits from rules that reward homegrown talent. A club building quickly through international signings has to manage the senior-list cap and the limits on overseas signings carefully. In both cases, registration determines which players a coach can actually pick.
Sources and further reading
- FIGC: the Italian federation's regulations on registration, eligibility and transfer windows
- Lega Serie A: competition rules on squad lists, team sheets and the season calendar
- UEFA: club competition regulations, useful for comparing homegrown-player definitions
- FIFA: rules on the status and transfer of players, the international contractual framework