▁matches ▁are ▁played ▁at ▁Sport park ▁De ▁To ek om st , ▁except ▁for ▁the ▁occas ional ▁match ▁in ▁the ▁Amsterdam ▁Arena . ▁Now ▁regarded ▁a ▁semi - prof essional ▁team ▁in ▁their ▁own ▁respect , ▁the ▁only ▁period ▁in ▁which ▁players ▁are ▁able ▁to ▁move ▁between ▁squad s ▁is ▁during ▁the ▁transfer ▁windows , ▁unless ▁the ▁player ▁has ▁made ▁less ▁than ▁ 1 5 ▁appearances ▁for ▁the ▁first ▁team , ▁then ▁he ▁is ▁still ▁el ig ible ▁to ▁appear ▁in ▁both ▁first ▁team ▁and ▁second ▁team ▁matches ▁during ▁the ▁course ▁of ▁the ▁season . ▁Furthermore , ▁the ▁team ▁is ▁not ▁el ig ible ▁for ▁promotion ▁to ▁the ▁E red iv isie ▁or ▁to ▁particip ate ▁in ▁the ▁K N VB ▁Cup . ▁J ong ▁Ajax ▁were ▁joined ▁in ▁the ▁E er ste ▁Div isie ▁by ▁J ong ▁FC ▁Tw ente ▁and ▁J ong ▁P SV , ▁reserve ▁teams ▁who ▁have ▁also ▁moved ▁from ▁the ▁Bel o ften ▁E red iv isie ▁to ▁the ▁E er ste ▁Div isie , ▁in ▁place ▁of ▁V V ▁Kat w ijk , ▁SC ▁Ve end am ▁and ▁AG O V V ▁Ap el do orn , ▁increasing ▁the ▁total ▁number ▁of ▁teams ▁in ▁the ▁Jup iler ▁League ▁from ▁ 1 6 ▁to ▁ 2 0 . ▁ ▁J ong ▁Ajax ▁left ▁the ▁Bel o ften ▁E red iv isie ▁in ▁ 2 0 1 3 , ▁having ▁held ▁a ▁ 2 1 - year ▁ten ure ▁in ▁the ▁res erves ▁league , ▁having ▁also ▁won ▁the