Pedzisa mutsara unotevera: Cooney akaita kutanga kwake mukuru weLeinster musi wa2 Gunyana 2011, paakatanga kurwisa Ospreys muSwansea panguva yemutambo wekutanga we
2011<unk>12 Pro12. Cooney akaramba achiita kuonekwa kweLeinster muligi, achitamba mamwe mana, kunyangwe imwe neimwe yeaya maitiro yakauya kubva pabhenji. Zvizhinji zvekuonekwa kwaCooney kwakauya apo vatambi veLeinster vepamberi vaive vasipo paNdebe yeNyika ya2011, kunyangwe akahwinawo muyedzo wake wekutanga wechikwata gare gare mumwaka mukukunda Benetton Treviso. Cooney akaita European debut yake kudivi mufainari ye2011-12 Heineken Cup, achiuya semutsivi wepakati-hafu mukukunda kweLeinster 42-14 kukunda vavengi veIrish Ulster uye kuhwina menduru mukuita.