Johnson was previously committed to Louisville.
Warren was also named Big Ten Offensive Player of the Week and AP Player of the Week for his performance against the Trojans.
Barker became the first Nittany Lion to hit four field goals in a game since Tyler Davis in 2016.
It was a down week for many former Penn State football players.
From a Penn State takeover to an underwhelming tailgate scene, here's what we noticed in Los Angeles.
