Wall leaves Happy Valley as the reigning team MVP and will join the Nashville Predators' system.
After going up early, substitutes sealed the deal for Penn State against the Division II Golden Rams.
Despite strong defense a confident second half, the Nittany Lions couldn't convert in the end.
Duke is currently riding a return to glory after missing out on the NCAA Tournament entirely in 2022 and has now made its way back to the Final Four for the 12th time in 16 years.
Historically, Princeton leads its series with Penn State 3-0, though the groups haven't faced each other since 1998.
"We want to be true to ourselves, first and foremost, and not change a whole lot from the regular season."