Saki has been inactive the past few years since his kickboxing career came to a halt. He was looking for renewed motivation and he's found it in mixed martial arts.
Here's a quick tour through his first official UFC fight week, beginning with a warning for the light heavyweight division he gave to UFC Facebook earlier this week.
Want to see the power? Saki showed off some pad work on UFC Instagram this week
Check out the staredown between Saki and da Silva at Weigh-ins.
Alistair Overeem gave his thoughts on Saki's debut.