The ebb and flow of the college football season hits a low this week if measured by the number of Top 25 matchups. The only one is No. 9 Missouri at No.

25 Texas A&M, the fewest since there were no ranked teams pitted against each other during Week 3 last season. Maybe it's karma for the weekend we enjoyed last week. Bookending it were the Miami-Virginia Tech did-he-catch-it-or-not ending and that fantastic Alabama-Georgia finish .

Of course, there still are important games this week besides the Southeastern Conference showdown in College Station, Texas. No. 12 Mississippi, upset by Kentucky at home, is in bounce-back mode on the road against a South Carolina team that beat the Wildcats by 25 points in Week 2.

No. 22 Louisville has a tough follow-up to its loss to Notre Dame when high-scoring SMU visits. No.

3 Ohio State faces its biggest challenge to date when breakout star Kaleb Johnson leads Iowa into the Horseshoe. Texas Tech, picked in the bottom half of the Big 12 preseason poll, has won four of five to start the season and gets a measuring-stick game at Arizona. And don't forget the Commander-In-Chief’s Trophy series, which gets underway with unbeaten Navy at struggling Air Force.

No. 9 Missouri (4-0, 1-0 SEC) at No. 25 Texas A&M (4-1, 2-0), Saturday, noon ET (ABC) Missouri hopes to play like a top-10 team in its road opener.

The Tigers had to erase a 14-3 halftime deficit to beat Boston College and had to go two overtimes to get past Vanderbilt . They've had a week .