Did you know 'Bones' Jon Jones and 'The Spider' Anderson Silva once had a secret sparring session in Vegas? Chael Sonnen just dropped some new details, saying only Dana White, Lorenzo Fertitta, and the fighters themselves witnessed it. Rumor has it Silva edged out Jones, but some say 'Bones' might've held back out of respect. No footage has ever surfaced, so the debate rages on: who really won this legendary clash? #UFC #JonJones #AndersonSilva #Sports