I scored the rounds 1, 2 for Islam and 3, 4, 5 for Volk. No way was it even close to being a robbery though: rounds 2 and 3 were extremely tight, and the scoring of the 4th is highly ambiguous.
On one hand, the commonly set precedent in MMA judging would favor Islam clearly winning the round, but on the other, the scoring criteria as it is actually written can clearly be interpreted (which I did) in Volk's favor.
Even if Islam held a position that is conventionally considered to be dominant for almost the entirety of the 4th, it shouldn't have been scored as effective grappling beyond the initial back take to begin with. Effective grappling is not just about achieving a position and holding onto it, but is based on what you can actually do to threaten the opponent with said position.
Volk was the actual aggressor and doing practically all of the damage while in the position, and Islam was completely unable to threaten Volk with any submissions for the entire time. Volk had control of Islam's right arm by having it pinned under his body weight, and Islam was unable to free the arm at any point after Volk established the pin. The threat of an RNC simply never was there after that point.
At best, Islam won the cage control aspect of the round since Volk could not escape, but going by the rules, that only comes to play if literally everything else is even, which it wasn't.