Dana White Says Marvin Vettori 'Makes Sense' As Backup For Adesanya-Whittaker

Marvin Vettori's badassery last week's already paying off ... 'cause Dana White tells TMZ Sports the UFC star could be tapped as the backup fighter for Israel Adesanya vs. Robert Whittaker's title fight. Izzy, the champion, and Whittaker, the #1…