Did you know that of the 128 FBS teams 110, or 86%, will have one fewer week off in 2015?

It’s a difference that will be felt across the board and includes both those conferences that play a championship game in what’s considered the final week of the regular season (e.g. the SEC, ACC, the Big Ten and the Pac-12) and those who don’t, instead playing a final regular-season game in that slot (e.g. the Big 12).

Overall, where the 2014 field was credited with 261 total combined byes, the 2015 field will have a mere 139. It’s the fewest since 2012, when only 147 open dates were on the schedule.

The reason for the drop comes down to the dates allocated for a given year. Take a look at the number of days from the first Saturday to the final Saturday for the each of the last five regular seasons vs. the number of total combined byes.

2011 92 days (Sept. 3 – Dec. 3) 149 byes

2012 92 days (Sept. 1 – Dec. 1) 147 byes

2013 99 days (Aug. 31 – Dec. 7) 260 byes

2014 99 days (Aug. 30 – Dec. 6) 261 byes

2015 92 days (Sept. 5 – Dec. 5) 139 byes

So, in other words, fewer total days equals fewer open dates.

The Exceptions

Here’s a quick look at the only FBS teams, by conference, who won’t suffer a reduction in byes in 2015 vs. the number in 2014. The bulk of the list—nine teams, or 50%—hail from the Sun Belt, where all but two teams remain static with last year’s number.

The 18 schools, listed with the number of bye weeks scheduled in both 2014 and 2015, represent a paltry 14% of the nation. Each is gifted with a silent advantage over their counterparts.

American Athletic: None

ACC: None

Big Ten: None

Big 12: Texas (2 byes in 2014 and 2 in 2015) and West Virginia (2 and 2)

Conference USA: UTSA (1 and 1)

Independent: None

MAC: Akron (1 and 1), Central Michigan (1 and 1), Kent State (1 and 1) and Western Michigan (2 and 2)

Mountain West: Utah State (1 and 1)

Pac-12: Washington (1 and 1)

SEC: None.

Sun Belt: Appalachian State (2 and 2), Arkansas State (2 and 2), Georgia Southern (2 and 2), Georgia State (2 and 2), New Mexico State (2 and 2), South Alabama (2 and 2), Texas State (2 and 2), Troy (2 and 2) and Louisiana-Lafayette (2 and 2)

In many cases, the teams highlighted here had fewer open dates than did other members of their conference last season, and this year is a case of the rest of the league catching up.

To illustrate, Washington was the only Pac-12 school in 2014 with only one open date; the rest of the field had two. In 2015, all but two of the members have one bye week. The exceptions, which we’ll cover below, have zero.

The Biggest Losers

The following schools lose the most off time in 2015, dropping more than one open date each. Again, the list will be by conference and include the number of bye weeks last year vs. the number this season.

American Athletic: Cincinnati (3 in 2014 vs. 1 in 2015), Connecticut (3 vs. 1), East Carolina (3 vs. 1), Houston (3 vs. 1), SMU (3 vs. 1), Temple (3 vs. 1), Tulane (3 vs. 1) and UCF (3 vs. 1).

Keep in mind that American Athletic scheduling is being transformed in 2015 by the split into two divisions and the addition of a conference championship game slated for Saturday, Dec. 5. This clearly has a big effect on the number of bye weeks members will enjoy.

ACC: None. (Every member loses one bye week).

Big Ten: None. (Every member loses one bye week).

Big 12: Iowa State (3 to 1), Oklahoma (3 to 1), Oklahoma State (3 to 1), and TCU (3 to 1).

Conference USA: None. (Every member except for UTSA loses one bye week).

Independent: None. (Every independent loses one bye week).

MAC: None. (Every member except for Akron, Central Michigan, Kent State and Western Michigan loses one bye week).

Mountain West: None (Every member except for Utah State loses one bye week).

Pac-12: Arizona (2 to 0) and Colorado (2 to 0).

SEC: None. (Every member loses one bye week).

Sun Belt: None. (Idaho and Louisiana-Monroe lose one bye week each, others remain static at two).

Programs Without a Break

The last season an FBS program played without a week off was, not surprisingly, in 2012 when the number of byes was slashed in half vs. 2013-14 standards. That year, five programs played without a break—Akron, Western Michigan, New Mexico, UNLV and Cal—none of which won more than four games.

Take a look at the five teams facing similar situations in 2015.

FIU: The Golden Panthers technically have Week 13 off, but that’s after they’ve played their entire 12-game regular-season slate. The only way this works out to be a legitimate bye is if they ascend to the C-USA championship game on Saturday, Dec. 5.

Miami (Ohio): As is the case with FIU, the Redhawks technically get Week 13 off (Nov. 28), but that’s after they’ve played all 12 of their regular-season games.

Hawaii: For the second-straight year the Rainbow Warriors play 13 regular-season games, only this year they’ll play them consecutively without a break. This scheduling twist seems especially cruel to the only program not located on the mainland, saddled with an exhausting travel itinerary.

Arizona: Like FIU and Miami (Ohio), the Wildcats draw a Week 13 “bye”, meaning it comes after all 12 back-to-back regular-season games and is only applicable if the team reaches the Pac-12 title game on Friday, Dec. 4.

Colorado: Like Hawaii, the Buffaloes pick up an extra regular-season game this year and will pay the price for it by playing 13 straight without a break. The last time Colorado played 13 was in 2011, also it’s most recent campaign without an open date.

The Impact

The biggest concern with such a drastic drop in open dates is injuries. It’s logical to assume that fewer days off, resulting in fewer recovery days, will lead to not only to an increase in the number of overall injuries, but more game time lost to injuries.

This potentially has a tremendous impact not only on an entire team (think wins/losses, bowl bids and title opportunities), but on individual players (think starting job retention, stats, individual awards and NFL draft stock).

The other angle worth considering is depth. In other words, the deeper-stacked teams will have an advantage in years with fewer open dates, being able to better withstand an onslaught of injuries. This perpetuates the reign of the big rich schools who recruit well like the Alabama’s and Ohio States of the league, stacked with stockpiles of talent.

While we can logically assume this will happen on some level, what’s more difficult is tracking the changes, this due to the lack of solid statistical record keeping on injuries.

On the flip side, will fewer interruptions in a season provide a benefit for some programs, especially those who run high-powered offenses that require precise timing?

And what about stopping and starting momentum with fewer weeks off?

No matter how you slice it, the drastic drop in bye weeks is bound to create a silent undercurrent that drives many of the major storylines that emerge in 2015.

Amy Daughters is a contributor to FBSchedules.com.