By The Numbers: UFC on ESPN 19 Pre-Fight Edition

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As Marvin Vettori knocks on the door to contention in the Ultimate Fighting Championship’s middleweight division, a proven commodity stands in his way.

Vettori on Saturday will put his three-fight winning streak on the line when he toes the line against Jack Hermansson in the UFC on ESPN 19 headliner at the UFC Apex in Las Vegas. The former Venator Fighting Championship titleholder enters his high-stakes duel with Hermansson on the heels of back-to-back-to-back victories over Cezar Ferreira, Andrew Sanchez and Karl Roberson. In fact, Vettori has…