Before matches, teams must complete the match sheet with the numbers, first names, surnames, dates of birth and, if applicable, shirt names of the 20 players in the squad, together with the first names, surnames and functions of the officials sitting on or next to the substitutes’ bench. The goalkeepers and team captains must be identified. Players must wear the shirt and short numbers indicated on the match sheet.
The 11 players indicated on the match sheet as forming the starting 11 must commence the match. The other players are designated as substitutes.
Each team must have its match sheet validated by its competent association official and submit it at least 75 minutes before kick-off.
Up to five of the substitutes listed on each team’s match sheet may take part in the match. Each team may use a maximum of three stoppages in play to make substitutions (one additional stoppage in extra-time can be used). Substitutions made before the start of the match, during half-time, between the end of normal playing time and extra time, and at half-time during extra time do not reduce the number of stoppages in play that can be used. A player who has been substituted may take no further part in the match.
After the validated match sheets have been submitted no changes are allowed. Before the match has kicked off, the following exceptions are possible:
If any of the ten starting outfield players listed on the match sheet cannot start the match due to physical incapacity, he may be replaced by one of the substitutes listed on the match sheet. The replaced player is taken off the match sheet and the quota of substitute players is reduced accordingly for the match in question. During the match, five players may still be substituted.
If any of the substitute outfield players listed on the match sheet cannot be fielded due to physical incapacity, he may not be replaced, which means that the quota of substitute outfield players is reduced accordingly for the match in question.
If the starting goalkeeper listed on the match sheet cannot be fielded due to physical incapacity, he may be replaced by one of the substitutes listed on the match sheet. The replaced goalkeeper may, however, still be used as a substitute goalkeeper. If this is not possible he may be replaced by a goalkeeper not on the player list.
If the substitute goalkeeper cannot be fielded due to physical incapacity, he may be replaced by a goalkeeper not on the player list.
The association concerned must, upon request, provide the UEFA administration with the necessary medical certificates.