If it wasn’t already obvious during Washington State’s preseason football camp, it’s rather clear now that the Cougars won’t rely on nearly as many freshmen as they did in 2012.

Seventeen such players (redshirt freshmen included) saw the field last season. That number finds its way into Mike Leach’s mouth on a regular basis, typically as a reference point when evaluating WSU’s growth in a number of areas.

Just four true freshmen have played this season, with safety Isaac Dotson, a Newport High grad, and offensive lineman Riley Sorenson making their collegiate debuts in the second half of WSU’s 48-10 win over Southern Utah last week.

Because that game was in hand for the entire fourth quarter, it stands to reason that any healthy players the Cougars plan to use this season would have been put in the game. So it appears WSU will go forward with just those four true freshmen — receiver River Cracraft and cornerback Daquawn Brown were the first two — along with four or five second-year players who redshirted last season.

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Those younger players, particularly Dotson and Sorenson, could see more playing time tonight at 7:30 against Idaho, a team the Cougars should handle in the same fashion they did Southern Utah.

WSU (2-1) opened this week as a 32-point favorite against the Vandals (0-3), who have lost nine consecutive games and 24 of 27 since the beginning of the 2011 season.

Defensive coordinator Mike Breske said Dotson, who came to WSU as a quarterback but switched to defense early in camp, could play Saturday.

“We’ll pick and choose opportunities for him, but I want to get him reps this weekend,” Breske said. “I think he got 13 last week. Where that number is (this week), I can’t tell you that right now. Just kind of get a feel for what happens. But we’ve got to get him in the ballgame.”

It seemed a surprise to some that Sorenson, a freshman from Santa Margarita, Calif., made his debut so late in such an inconsequential setting. But if offensive line coach Clay McGuire believes Sorenson is one of the team’s eight best linemen, he’s going to play.

“We’ve said all along, he’s in our top eight,” McGuire said.

One redshirt freshman who might see a little more playing time this week is Austin Apodaca, the backup quarterback who made his debut at that position against Southern Utah. Apodaca played in each of the Cougars’ first three games as the holder for PATs and field goals, but got in at quarterback in the fourth quarter after WSU took a 38-point lead.

If the Cougars get a big lead, Apodaca could get a chance to improve on his 3-for-7 debut.

“He does really good in practice,” Leach said. “He just needs to go in there and get enough plays so he can show what he can do.”