Statistics of the Swiss National League in the 1986–87 football season, both Nationalliga A and Nationalliga B.
There were 32 member clubs in the Swiss Football Association (ASF/SFV), divided into two tiers of 16 teams each. At the end of the season there would be changes in the ASF/SFV and to the format of the league. These modifications included increassing the number of members in the association by four clubs. It had also been decided to reduce the size of the top tier NLA by four teams and to inrease the size of the second-tier NLB by eight teams.
In both divisions the teams played a double round-robin to decide their table positions. The Swiss champions would qualify for the 1987–88 European Cup, the runners-up and third placed team would qualify for the 1987–88 UEFA Cup. The last two placed teams in the NLA would be directly relegated. The four teams in eleventh to fourteenth position would compete a play-out round with the top four teams of the NLB to decide the last two slots in next season's NLA. The last four teams in the NLB would compete a play-off round against the top eight team of the 1. Liga to decide the final eight slots in next season's NLB.
The first round was played on 9 August 1986. There was to be a winter break between 29 November and 28 February 1987. The season was completed on 12 June 1987.
The first round was played on 9 August 1986. There was to be a winter break between 30 November and 7 March 1987. The season was completed on 13 June 1987.
The four teams in eleventh to fourteenth position in the NLA competed a two-legged play-off round with the top four teams of the NLB to decide the last two slots in next season's NLA. The qualification games were played on 20 and 23 June and the finals on 27 and 30 June.
Aarau win 9–1 on aggregate and continue to the finals. ES Malley remain in the NLB.
Basel win in the penalty shoot-out and continue to the finals. Bulle remain in the NLB.
FC Lugano win 2–1 on aggregate and continue to the finals. Vevey Sports are relegated to 1987–88 Nationalliga B.
Wettingen win 4–0 on aggregate and continue to the finals. FC Grenchen remain in the NLB.
Basel win 8–2 on aggregate and remain in the NLA. Wettingen are relegated to 1987–88 Nationalliga B
Aarau win 5–1 on aggregate and remain in the NLA. Lugano remain in the NLB.
The four 1. Liga group winners had played the first stage against the four runners-up. The winners of those four games had achieved promotion.
The four losing teams from the first stage played a two legged match against one of the four last placed teams from the NLB. The winners of these matches, that were played on 21 and 28 June, would play in the second tier, NLB, next season. The losers would play in the third tier, 1.Liga.
FC Olten win 4–3 on aggregate and remain in the 1987–88 Nationalliga B. FC Altstätten remain in the division for the 1987–88 Swiss 1. Liga season.[4]
FC Biel-Bienne win 7–5 on aggregate and remain in the 1987–88 Nationalliga B. FC Bern remain in the division for the 1987–88 Swiss 1. Liga season.[4].
FC Renens win 5–3 on aggregate and remain in the 1987–88 Nationalliga B. SC Buochs remain in the division for the 1987–88 Swiss 1. Liga season.[4].
BSC Old Boys win 6–1 on aggregate and are promoted to the 1987–88 Nationalliga B. SC Kriens are relegated to the 1987–88 Swiss 1. Liga season.[4].