The announcer in the UNC - Iowa game is calling it an unassisted double play after the 2B caught a liner then threw to first to catch that runner off the base, and out.
I thought unassisted was catching a liner then stepping on the/a bag to record the second out there, ie., ‘unassisted’.
"When I was young, I was sure of many things; now there are only two things of which I am sure: one is, that I am a miserable sinner; and the other, that Christ is an all-sufficient Saviour. He is well-taught who learns these two lessons." -John Newton