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To determine the four best second-placed teams from the qualifying group stage which advance to the play-offs, only the results of the second-placed teams against the first, third and fourth-placed teams in their group are taken into account, while results against the fifth-placed team are not included. As a result, six matches played by each second-placed team will count for the purposes of determining the ranking.
The draw for the play-offs was held on 7 September 2018, 14:00 CEST (UTC+2), at the UEFA headquarters in Nyon, Switzerland. The four teams were drawn into two knockout rounds (semi-finals and final) of home-and-away two-legged format.
For the semi-finals, two teams were seeded and two teams were unseeded, based on their latest coefficient ranking after the completion of the qualifying group stage, calculated based on the following:
For each semi-final, a seeded team was drawn against an unseeded team, with the order of legs decided by draw. A draw was also held for the final between the two winners of the semi-finals to decide the order of legs.
Netherlands
Switzerland
Belgium
Denmark
Iceland
Wales
Austria
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