Competitors from Australia, New Zealand, and the Pacific Islands would be attending.
Mr Oxtoby said it was "so exciting". He said he took being the captain in his stride.
"It's a big deal, I guess."
He will play midfield while Mr Singh will be the goalkeeper.
Australia-based company BioGiene is providing funding for the two officers.
"It's going to cost about $1500 each, obviously a big chunk of cash," Mr Singh said.
"We put a thing on Facebook just saying this is us, this is what's going on."
An operating manager for the company who lives locally saw the post and approached them about offering funding.
Mr Singh was looking forward to "seeing the standard" of their competition.
"We've only had a handful of tournaments," he said.