What an 8 team playoff would've looked like each year.

Using the final regular season CFB Playoff Rankings and and the format 5 Power 5 Champions, 2 At-large, and highest ranked Group of 5 Champion, here is what your 8 team playoff would've looked like each season since 2014.

Asterisk* represents the At-large bid
(Parentheses represents the highest ranked Group of 5)

I also included any 2 loss or better Power 5 schools that would've had been in discussion or included based on the parameters of an 8 team tournament.

2014
(#20 Boise State 10-2) at #1 Alabama 12-1
#5 Baylor* 11-1 at #4 Ohio State 12-1
#6 TCU 11-1 at #3 Florida State 13-0
#7 Mississippi State* 10-2 at #2 Oregon 12-1

Left Out
#8 Michigan State 10-2

2015
(#18 Houston 12-1) at #1 Clemson 13-0
#5 Iowa* 12-1 at #4 Oklahoma 11-1
#6 Stanford 11-2 at #3 Michigan State 12-1
#7 Ohio State* 11-1 at #2 Alabama 12-1

Left Out
#8 Notre Dame 10-2, #9 Florida State 10-2, #10 North Carolina 11-2, #11 TCU 10-2

2016
(#15 Western Michigan 13-0) at #1 Alabama 13-0
#5 Penn State 11-2 at #4 Washington 12-1
#7 Oklahoma 10-2 at #3 Ohio State* 11-1
#6 Michigan* 10-2 at #2 Clemson 12-1

(Oklahoma and Michigan both finished 10-2, I'm using assumption they wouldve swapped their "ranking" in order to avoid the Michigan OSU rematch in R1.

Left Out
#8 Wisconsin 10-3

2017
(#12 UCF 13-0) at #1 Clemson 12-1
#5 Ohio State 11-2 at #4 Alabama* 11-1
#6 Wisconsin* 12-1 at #3 Georgia 12-1
#8 USC 11-2 at #2 Oklahoma 12-1

Left Out
#7 Auburn 10-3, #9 Penn State 10-2, #10 Miami 10-2, #11 Washington 10-2

2018
#9 Washington 10-3 at #1 Alabama 13-0
#5 Georgia* 11-2 at #4 Oklahoma 12-1
#6 Ohio State 12-1 at #3 Notre Dame* 13-0
(#8 UCF 13-0) at #2 Clemson 13-0

Left Out
#7 Michigan 10-2