The last time Portland State traveled to Pullman, the FCS program upset a Washington State team that went on to win nine games in 2015.
The Vikings (0-1) will try it again Saturday, while Washington State (0-1) seeks to recover from a late collapse that led to a loss against Utah State in the Cougars' season opener.
Washington State is on the cusp of beginning the season with the first quarterback to take a snap for the Cougars remaining an unknown.
Utah State may be following a similar plan.
Washington State coach Nick Rolovich said he had not yet selected a starter and may not announce in advance whether Jayden de Laura or Tennessee graduate transfer Jarrett Guarantano will lead his run-and-shoot offense when the Cougars host the Aggies on Saturday night.