sharix-sports-webservice-running/admin/blocked_sportsman.py

from django.contrib import admin
from webservice_running.models import BlockedSportsman

@admin.register(BlockedSportsman)
class BlockedSportsmanAdmin(admin.ModelAdmin):
    list_display = ('id', 'sportsman', 'sportsman_blocked')
    list_filter = ('sportsman', 'sportsman_blocked')