Former Ultimate Fighting Championship (UFC) middleweight contender Chael Sonnen knows a thing or two about ex-light heavyweight kingpin Jon Jones, who coached alongside the part-time "Bad Guy" on The Ultimate Fighter (TUF) 17 back in early 2013.
Even if he didn't, I'm sure Sonnen would give his opinion anyway.
As we're all aware by now, Jones was popped by United States Anti-Doping Agency (USADA) for estrogen blockers ahead of UFC 200 (more on that here). But that wasn't his first run-in with the drug testing agency, as Sonnen explained to Joe Rogan just last month.