Sanadkii 2011, Sundgren wuxuu ku soo laabtay kooxdiisii hore ee Lit inta badan xilli ciyaareedkii halka Alexander Lindström uu ka soo kabsanayay qalliin, isagoo ka caawiyay inay ku dhammeeyaan kaalinta koowaad ee dalxiiska qaranka ee Sweden ee Elite Series (in kasta oo ay ku soo baxeen kaalinta labaad ee finalka). Sundgren wuxuu la ciyaaray kooxda inta badan safarka caalamiga ah ee waayeelka qeybtii hore ee sanadka iyo mar kale dhamaadka xilli ciyaareedka ee Masters-ka Yurub. Xilli ciyaareedkii 2012-2013, Sundgren wuxuu ahaa hogaamiyaha waqtiga buuxa ee kooxda Eriksson markii ay kooxdu u guurtay Karlstad, waxaa sidoo kale ku soo biiray Markus Eriksson oo ahaa kii labaad, maadaama Alexander Lindström iyo Henrik Leek ay tallaabo ka qaadeen curling. Kooxda cusub ee dib loo habeeyay, Sundgren iyo asxaabtiisu waxay ku guuleysteen Swiss Cup Basel (2012) iyo European Masters (2013), iyo sidoo kale Universiade Jiilaalka (2013). Xilli ciyaareedkii 2013-14, Kooxda Eriksson waxay kaalinta labaad ka gashay Swiss Cup Basel, Mercure Perth Masters, iyo Sweden's Elite Series waxayna ku tartameen Kanada oo ka tirsan World Curling Tour, iyagoo kaalinta shanaad ka galay saddex dhacdo oo ay gaareen afar dhamaadkoodii ugu horreeyay ee Grand Slam ee Qaranka. Kooxda ayaa sidoo kale ku guuleysatay Horyaalka Curling ee ragga ee Iswiidhan isla sannadkaas, kooxda ayaa loo doortay inay u matalaan Iswiidhan Horyaalka Curling ee ragga ee adduunka ee 2014.
, maadaama kooxda Edin ay Sweden ku matalaysay tartanka curling-ka ee Yurub. Inkasta oo kooxda ay ka badiyeen kooxda Norway ee finalka, waxay ka adkaadeen kooxda Kanada, oo uu Kevin Koe laba jeer ka booday dhacdada.