DeAndre Jordan -- I Didn't See Blake Griffin Slap Anyone

A key witness has emerged in Blake Griffin's alleged slap scandal -- his teammate DeAndre Jordan who was WITH the L.A. Clippers star the night of the incident.

We spoke to DeAndre out in L.A. yesterday who told us he had NO IDEA Blake was being investigated by police for allegedly pulling a Zsa Zsa Gabor on a patron at Tao nightclub early Sunday morning.

As we previously reported, Jordan was partying with Blake and several other Clippers teammates that night -- but tells TMZ Sports he has no recollection of Blake whipping out the pimp hand that night.