Žalgiris struggled at the start of the 2018–19 EuroLeague season. Needing another point guard, Žalgiris signed Derrick Walton in October. By December, led by Westermann, Davies, Grigonis and White, Žalgiris reached sixth place with a 7–7 record. However, injuries decimated the team, leaving a void in the point guard position. Walton's disappointing play led to declining minutes, and a release in February 2019. Deon Thompson was signed in January to strengthen the front court. In February, Žalgiris suffered a fiasco in the King Mindaugas Cup to Rytas Vilnius, losing the tournament for the first time since 2016. By the start of March, Žalgiris was 13th with a 9–15 record, with minimal hopes of reaching the playoffs. Despite this, and a poor home record, Žalgiris led EuroLeague attendance by a large margin. The team's play started to improve when Walkup was pushed to the point guard position to replace Walton, Westermann returned after injury and improving play by Thompson led to a six-game winning streak, achieving a 15–15 record and the final spot in the playoffs. In the EuroLeague playoffs, Žalgiris lost to Fenerbahçe. Žalgiris broke the EuroLeague's home attendance record with an average of 14,808 spectators in the Žalgiris Arena. In the 2018–19 LKL season, Žalgiris finished in first place in the regular season, and swept the series finals against Rytas, winning the series 3–0, for a ninth consecutive LKL championship.