The Wellington Saints basketball side will be without Jordan Mills for next season's title defence after he tested positive for a banned substance.
The Sports Tribunal of New Zealand Friday released their decision after Mills returned a positive test after a National Basketball League (NBL) match on May 19.
The prohibited substance was asthma medication terbutaline, otherwise known as Bricanyl.
In the hearing this week, Mills said he used an inhaler for an ongoing asthma condition and was unaware it was banned.
While terbutaline is known to treat asthma, it can also enhance performance.
While disappointed, and pointing out that his ban is longer than someone who would fail a test for marijuana use, Mills has taken the punishment on the chin.
"It wasn't good enough that I simply relied on my doctors to ensure that any medications I was prescribed were permitted under the World Anti-Doping Code," he said.
"I should have personally checked my medications and had I done that, I would have known I needed to use a different asthma medication."
Drug Free Sport New Zealand chief executive Nick Paterson said Mills should have known better, after attending an anti-doping seminar this year.
"He has been tested before and knows about the resources available to him."
The one-year ban has been backdated to when the sample was collected in May.
The New Zealand NBL season usually runs from March to June.