Machado could be a central figure in a historic free - agent class at the end of 2018 -- unless the O 's lock him up first .
Machado will be just 26 years old when he 's eligible to hit the open market .
Machado , who will be just 26 years old when he 's eligible to hit the open market , could be a central figure in a historic free - agent class at the end of 2018 -- unless the O 's lock him up first .