With fourth-round pick Akayleb Evans still in the concussion protocol, the Vikings are planning to start another rookie at cornerback on Sunday against the Cowboys.
Second-round pick Andrew Booth Jr. is expected to make his first NFL start with Evans out. Booth, who missed four of the Vikings' first five games with a quadriceps injury, got his first defensive playing time on Sunday in Buffalo after Evans left, playing 37 snaps in the Vikings' overtime win.
The Vikings pulled Booth in favor of Duke Shelley in overtime, but O'Connell said Booth will get the start on Sunday.