By Sally Fahey

It looks like ex-Penn State quarterback Christian Hackenberg isn’t goo enough to play the NFL.

The Oakland Raiders cut him yesterday less than a month after the New York Jets gave him his walking papers

Oakland released Hackenberg from its 90-man roster three weeks after acquiring the backup quarterback from the Jets for a conditional seventh-round choice in 2019.

A traded player typically must remain on his new team’s roster for a period of games or past mandatory roster reduction dates for conditional choices to change hands.

New Raiders coach Jon Gruden liked what he saw from Hackenberg when the former Penn State quarterback appeared on the ESPN-produced Gruden’s QB Camp two years ago. The move to acquire Hackenberg amounted to an extended tryout, with no strings attached.

The Raiders headed into their mandatory three-day minicamp Tuesday with Derek Carr, Connor Cook and EJ Manuel as their top three quarterbacks. Like Hackenberg, all three were past participants in Gruden’s QB Camp, giving the Raiders coach an extended look at all of them before they entered the NFL.