The biggest game of the day is in the Southeast Conference, where No. 1 Alabama will take on No. 7 Florida.
Today's Top 25 games
No. 1 Alabama (4-0) vs. No. 7 Florida (4-0), 8 p.m., WOIO Ch. 19.
No. 3 Boise State (3-0) at New Mexico St. (0-3), 8 p.m.
No. 4 Oregon (4-0) vs. No. 9 Stanford (4-0), 8 p.m., ESPN2.
No. 5 TCU (4-0) at Colorado St. (1-3), 2 p.m.
No. 8 Oklahoma (4-0) vs. No. 21 Texas (3-1) at Dallas, 3:30 p.m., ESPN.
No. 10 Auburn (4-0) vs. La.-Monroe (1-2), noon, ESPN2.
No. 12 LSU (4-0) vs. Tennessee (2-2), 3:30 p.m., WOIO Ch. 19.
No. 16 Miami (2-1) at Clemson (2-1), noon.
No. 18 Southern Cal (4-0) vs. Washington (1-2), 8 p.m.
No. 23 N.C. State (4-0) vs. Virginia Tech (2-2), 3:30 p.m.
No. 25 Nevada (4-0) at UNLV (1-3), 10 p.m.
Today's Big Ten games
No. 2 Ohio State (4-0) at Illinois (2-1), noon, Big Ten Network: The Buckeyes have beaten Illinois seven times in a row in Champaign, Ill. The Illini have given up 16.0 points per game, down from 30.2 last season.
No. 11 Wisconsin (4-0) at No. 24 Michigan St. (4-0), 3:30: MSU coach Mark Dantonio will work from the press box in his return from a heart attack two weeks ago.
No. 17 Iowa (3-1) vs. No. 22 Penn State (3-1), 8, ESPN: Iowa is first in the nation in fewest yards allowed per game, giving up just 227.5. Opponents have scored only 14 points in three games at Kinnick Stadium this season.
No. 19 Michigan (4-0) at Indiana (3-0), 3:30, ESPNU: Michigan has dominated the series, 51-9, but last year escaped with a 36-33 win over the Hoosiers.
Northwestern (4-0) at Minnesota (1-3), noon, ESPN: This season, Minnesota has 10 new starters on a defense that is ranked 85th out of 120 FBS teams with an average of 387 yards allowed over the first four games.
Today's MAC games
Akron (0-4) vs. N. Illinois (2-2), 6: Akron has allowed 29, 38, 47 and 35 points in its four losses.
Kent State (1-2) at Miami (2-2), 1: KSU's defense is No. 1 in the nation against the run at 61.3 ypg; but KSU's offense averages a league-low 66.3 ypg on the ground.
Ball State (1-3) at C. Michigan (2-2), 3:30: BSU has only 440 passing yards this season, which ranks 111th nationally.
Buffalo (1-3) at Bowling Green (1-3), 3:30: Buffalo is second in the MAC defensively on third-down conversions, allowing 32.8 percent.
Ohio (1-3, 0-1) at E. Michigan (0-4, 0-2), noon, WEWS Ch. 5: OU is averaging just 19 points and a MAC-worst 251.8 ypg on offense.
Temple (3-1) at Army (3-1), noon: Temple's standout running back, Bernard Pierce, was helped off the field in last week's loss to Penn State and will be a game-time decision.
Toledo (3-1) vs. Wyoming (1-3), 7: UT is coming off a nice win over Purdue and has a defense that has produced a MAC-leading 14 turnovers.
W. Michigan (1-2) vs. Idaho (2-2), 2: WMU ranks 117th in the nation at 227 total rushing yards this season.
Today's Division II games
Lake Erie (0-4, 0-3 GLIAC) vs. Ferris State (3-1, 3-0), 1:05: The Storm is coming off a near upset of 12th-ranked Hillsdale on the road last Saturday.
Notre Dame College (1-4) at Central State (1-3), 1:30: NDC, which is in the process of moving from the NAIA to NCAA Division II membership, takes on its second Division II opponent of the season.
Today's Division III games
No. 2 Mount Union (3-0, 2-0 OAC) vs. No. 8 Ohio Northern (3-0, 2-0), 1:30, STO (tape-delayed until Sunday, 5 a.m.): This showdown likely will decide the OAC champion. ONU is the most recent team to defeat Mount in the regular season, a 21-14 victory on Oct. 22, 2005.
Baldwin-Wallace (3-0, 2-0 OAC) vs. Marietta (1-2, 0-2), 1:30 (STO, tape-delayed until 11 p.m. today): The B-W defense is led by junior LB J.J. Laseak (Mentor), who has 28 tackles, and senior All-OAC LB Ryan Kish (Amherst), who returned a fumble for a TD last week at Heidelberg.
Case Western Reserve (3-0) vs. Allegheny (2-1), 1, STO (tape-delayed until Monday at 5 a.m.): These teams have not met since 1997. CWRU QB Joey Baum (Walsh Jesuit) is completing 72 percent of his passes.
Hiram (1-3) at Carnegie Mellon (2-2), 1: The Terriers lost, 47-21, last week to Oberlin, despite a game-high 12 tackles by freshman Josh Peacock.
John Carroll (1-2, 1-1 OAC) at Otterbein (2-1, 1-1), 1:30: JCU will have to stop Otterbein's Colton Coy, who has 371 rushing yards in three games.
Oberlin (2-1, 1-1 NCAC) vs. No. 7 Wittenberg (4-0, 2-1), 1: Wittenberg features TE Danny Enright and DB C.J. Plyler, who both were named to the d3football.com Team of the Week for their efforts in last week's 36-0 win over Muskingum.
-- From staff and wire reports