Whakaotihia te rerenga e whai ake nei: I te Paenga-whāwhā 2015, i hainatia e ia he kirimana kotahi tau ki te takaro mo Leinster. I hoki mai ia mō Leinster ki a Edinburgh Rugby i te tau kotahi mano tekau mā iwa.
Ko te tau 2015-16 Pro 12 ka eke ki te 9 ngā tohu. I te wiki e whai ake nei, ko ia te rangatira tuuturu, a ka whiua e ia nga tohu 13 hei awhina i a Leinster ki te patu i a Cardiff Blues. I purei ia i te whutupaoro i nga keemu e rua. I whakaroahia e Nacewa tana kirimana ka whakauruhia hei Kapene Leinster mo te wa 2015/16. I whakaingoatia a Nacewa hei rangatira mo te kapa Pro 12 o te waa i a ia e arahi ana i a Leinster ki te tihi o te teepu Pro 12 me te whakamutunga i Murrayfield i hinga ai ratou e Connacht Rugby 20-10.