(Via Instagram)

The first week of the NFL preseason is underway which means many players are getting their first taste of NFL action. The Oakland Raiders' Carlos Fields is one of those players. The former WSSU star saw his first taste of professional football in the Raiders 10-0 loss to the Minnesota Vikings on Friday.

Fields recorded three tackles in limited action, but impressed a lot of people with his speed and effort. The tweets speak for themselves.

SFGate.com's Vic Tafur was among them.

McKenzie's frat brother, Carlos Fields, with a nice run stuff. Undrafted LB has shown his speed on other plays. #Raiders
— Vic Tafur (@VicTafur) August 9, 2014

Fan "Raider Truths" liked Fields as well.

Carlos Fields making some plays.
— RaiderTruths (@RaiderTruths) August 9, 2014