The Bhoys won 2-0 but the 28-year-old questioned Ronny Deila's team selection.
And he feels the fact the Norwegian sent out a strong side shows how much pressure the Hoops are under to compete on all fronts.
Celtic won the Scottish League Cup last season but are five points off Scottish Premiership leaders Aberdeen currently and are part of a tough group in the Europa League.
A little surprised how strong Celtics team is tonight. Shows a bit how much pressure they are to compete on all fronts.— Darren O'Dea (@odea_darren) September 23, 2015
When questioned by a follower, O'Dea then mentioned Brown specifically and argued the need to rotate.
It doesn't work like that mate. The amount of games they play a season they need to rotate. Surprised brown started. https://t.co/VZiJZTtmAK— Darren O'Dea (@odea_darren) September 23, 2015
Is O'Dea right or was Deila wise not to underestimate Celtic's opponents?
A danger is fatigue catching up with the Scottish champions when they are up against tougher opposition, especially in Europe and with the likes of Aberdeen - as was proven recently.
But Celtic wouldn't actually have the games to be tired in if they didn't get past Raith - and maybe Deila felt he needed the leadership of Brown to ensure there were no slip-ups.