On paper, Saturday's slate of college football games was as routine as can be expected, with each top-10 team winning and only five top-25 teams losing, one of which wasn't favored in the matchup and two more that came at the hands of a ranked opponent.
But take a closer look, and you'll see Alabama getting taken to the wire by No. 11 Florida, No. 3 Oklahoma struggling mightily against underdog Nebraska, No. 6 Clemson beating Georgia Tech by the paltry score of 14-8, No. 8 Cincinnati needing a comeback win to beat Indiana, No. 9 Ohio State putting a lackluster performance against winless Tulsa and No. 10 Penn State standing strong — despite officiating errors — in a 28-20 win over No. 22 Auburn.
And that's only the top 10.
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Fresno State beat No. 13 UCLA 40-37 two weeks after taking now-fourth-ranked Oregon to the wire; West Virginia beat No. 15 Virginia Tech on a goal-line stand; No. 16 Coastal Carolina held off Buffalo, 28-25; No. 23 BYU scored its second consecutive top-25 victory over No. 19 Arizona State; and Michigan State, 3-0, knocked No. 24 Miami out of the top 25 altogether.
Elsewhere, Memphis (3-0) retained its unbeaten status thanks in large part to a significant officiating error against Mississippi State.
All those games and more should have significant impacts on the updated AP Top 25 and Coaches Poll rankings. Moreover, UCLA's loss to Fresno State marked the 19th by an AP Top 25 team — the most through three weeks of a season since the modern era began in 1936.
It all sets up for a wild college football season, one we're not even a third of the way through. With that, here are the updated top 25 rankings heading into Week 4 of the season:
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College football rankings for Week 4
Coaches Poll
| Rank | Team | Record | Points (No. 1 votes) |
| 1 | Alabama | 3-0 | 1,616 (64) |
| 2 | Georgia | 3-0 | 1,588 (1) |
| 3 | Oklahoma | 3-0 | 1,429 |
| 4 | Oregon | 3-0 | 1,427 |
| 5 | Texas A&M | 3-0 | 1,283 |
| 6 | Iowa | 3-0 | 1,263 |
| 7 | Clemson | 2-1 | 1,166 |
| 8 | Penn State | 3-0 | 1,130 |
| 9 | Cincinnati | 3-0 | 1,125 |
| 10 | Notre Dame | 3-0 | 1,048 |
| 11 | Florida | 2-1 | 1,000 |
| 12 | Ohio State | 2-1 | 989 |
| 13 | Ole Miss | 3-0 | 759 |
| 14 | Iowa State | 2-1 | 700 |
| 15 | Wisconsin | 1-1 | 589 |
| 16 | BYU | 3-0 | 504 |
| 17 | Coastal Carolina | 3-0 | 500 |
| 18 | Arkansas | 3-0 | 474 |
| 19 | Michigan | 3-0 | 423 |
| 20 | North Carolina | 2-1 | 411 |
| 21 | Michigan State | 3-0 | 344 |
| 22 | Oklahoma State | 3-0 | 300 |
| 23 | Auburn | 2-1 | 171 |
| 24 | UCLA | 2-1 | 170 |
| 25 | Fresno State | 3-1 | 85 |
Others receiving votes: Liberty 80; Kentucky 69; TCU 50; Virginia Tech 49; Texas 42; USC 41; San Diego State 41; Kansas State 40; Memphis 27; Boston College 27; Maryland 26; Arizona State 26; LSU 25; Wake Forest 22; West Virginia 19; Louisiana 17; Baylor 13; Army 12; SMU 8; Nevada 7; Stanford 6; UCF 6; Utah State 2; Tennessee 2; Rutgers 2; UTSA 1; Miami 1.
AP Top 25
| Rank | Team | Record | Points (No. 1 votes) |
| 1 | Alabama | 3-0 | 1,547 (59) |
| 2 | Georgia | 3-0 | 1,491 (3) |
| 3 | Oregon | 3-0 | 1,385 |
| 4 | Oklahoma | 3-0 | 1,302 |
| 5 | Iowa | 3-0 | 1,298 |
| 6 | Penn State | 3-0 | 1,197 |
| 7 | Texas A&M | 3-0 | 1,158 |
| 8 | Cincinnati | 3-0 | 1,145 |
| 9 | Clemson | 2-1 | 1,074 |
| 10 | Ohio State | 2-1 | 976 |
| 11 | Florida | 2-1 | 930 |
| 12 | Notre Dame | 3-0 | 874 |
| 13 | Ole Miss | 3-0 | 717 |
| 14 | Iowa State | 2-1 | 664 |
| 15 | BYU | 3-0 | 603 |
| 16 | Arkansas | 3-0 | 537 |
| 17 | Coastal Carolina | 3-0 | 526 |
| 18 | Wisconsin | 1-1 | 513 |
| 19 | Michigan | 3-0 | 456 |
| 20 | Michigan State | 3-0 | 389 |
| 21 | North Carolina | 2-1 | 306 |
| 22 | Fresno State | 3-1 | 201 |
| 23 | Auburn | 2-1 | 166 |
| 24 | UCLA | 2-1 | 142 |
| 25 | Kansas State | 3-0 | 127 |
Others receiving votes: TCU 91; Liberty 56; Virginia Tech 52; Oklahoma State 51; Maryland 29; Arizona State 24; Texas 22; USC 16; San Diego State 16; West Virginia 14; LSU 14; Kentucky 12; Boston College 9; Wake Forest 7; Texas Tech 5; Stanford 3; Memphis 3; Louisville 1; Wyoming 1.