Difference between the spectroscopic redshifts of the cluster members from the GOGREEN survey (Balogh et al. 2017, 2020) and cluster nominal redshift z = 1.132. The cluster galaxy distribution shows no clear asymmetry in the velocity distribution on the plane of sky, but highlights that the cluster members are organized in a filamentary structure around SPT-CL J2106-5844. The SZ model in units of Compton y is shown on the background. The black contours correspond the weak-lensing convergence map as in Kim et al. (2019).