2018–19 Swiss Basketball League  The 2018–19 Swiss Basketball League (SBL) season is the 88th season of the top tier basketball league in Switzerland. Fribourg Olympic defended successfully their league and conquered their 18th league. All teams will play two times against each other for completing 20 games per team. The six first qualified teams will join the group for places 1 to 6 while the other six teams will play the group for places 7 to 11. These two groups will be played with a one-legged round-robin format, where all teams from group 1 to 6 and the two first qualified teams from the group for the seventh position will be qualified for the playoffs. In this intermediate stage, teams start with the points accumulated by the winnings achieved in the first stage. The quarterfinals and the semifinals will be played as a best-of-five series while the final in a best-of-seven series. Winterthur was relegated to the NLB after finishing the previous season in the last position. Monthey-Chablais achieved the licence A in second instance after being firstly rejected. Seeded teams played at home games 1, 2 and 5.