Welcome to the forum.
You're spot on I think. With no reserve side this season, players have been competing for gametime and very few have notched up a full 90 minutes in a game, so fitness will be an issue - for Ross County as well I presume. 5 subbies will allow us rotate the squad and freshen it up during a game as legs tire as you say. At this stage, fitness may be a key factor in team selection. At the moment there's questionmarks over the fitness of players like Gallagher, Turnbull, Hylton, Seedorf, White, Long and Lang. However ultimately management will know best about how they want us to play and who is fit or not fit.