[3] On July 20, 2015, Zalmanson parted ways with Bnei Herzliya to join Maccabi Rishon LeZion, signing a three-year deal.

[4] In his first season with Rishon LeZion, he helped them to win the 2016 Israeli League championship as a backup center for Darryl Monroe.

On May 12, 2017, Zalmanson recorded a career-high 24 points, shooting 9-of-11 from the field, along with 7 rebounds and 2 steals in a 79–91 loss to Hapoel Holon.

On June 6, 2017, Zalmanson was named co-Israeli Basketball Premier League Most Improved Player, alongside Rafi Menco.

Zalmanson helped Eilat reach the 2019 Israeli League Final Four, where they eventually lost to Maccabi Tel Aviv.