Colorado maintained its hold on No. 1 in the United Press International college football ratings Sunday while Georgia Tech and Texas put themselves in position for a national-title shot by moving past Miami.

Both Georgia Tech and Texas took advantage of Miami's narrow victory over San Diego State to improve one position in the final regular-season ratings by the UPI Board of Coaches. The Yellow Jackets moved into second place and Texas was third, with the Hurricanes dropping to fourth.Brigham Young fell from fourth to ninth in the UPI ratings following its 59-28 loss at Hawaii. In the USA Today/CNN Poll, BYU plummeted from No. 3 to No. 13.This week's rankings will be carried through the postseason. The next UPI ratings will be released Jan. 2, when the 1990 national champion will be crowned.

Colorado, headed for an Orange Bowl rematch against Notre Dame, received 38 of 47 first-place votes cast by the 59-member Board of Coaches and finished with 692 of a possible 705 points. No. 2 Georgia Tech, which faces Nebraska in the Citrus Bowl, was at the top of seven ballots and received 638 points.

The Yellow Jackets remained the only unbeaten major-college team in the nation with a 40-23 victory Saturday over rival Georgia, improving their record to 10-0-1.

Texas finished with 568 points to move into third while No. 4 Miami received the final two first-place votes and wound up with 537 points.

Texas improved to 10-1 Saturday with a 28-27 victory over Texas A&M. Miami, 9-2, had to stave off a San Diego State comeback to take a 30-28.

No. 5 Florida State improved three places after its 45-30 victory over rival Florida.

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UPI Top 25

Record and first-place votes in parentheses, total points (based on 15 points for first place, 14 for second, etc.), and last week's ranking.

1. Colorado 10-1-1 692 1

2. Ga. Tech 10-0-1 638 3

3. Texas 10-1 568 4

4. Miami 9-2 537 2

5. Florida State 9-2 475 8

6. Notre Dame 9-2 469 6

7. Washington 9-2 429 7

8. Penn State 9-2 381 9

9. Brigham Young 10-2 280 4

10. Tennessee 8-2-2 278 10

11. Clemson 9-2 216 11

12. Michigan 8-3 175 12

13. Nebraska 9-2 119 14

14. Mississippi 9-2 111 13

15. Iowa 8-3 80 15

16. Louisville 9-1-1 44 16

17. Illinois 8-3 33 19

18. Southern Cal 8-3-1 25 18

19. Texas A&M 8-3-1 13 17

20. (tie) Michigan St.7-3-1 12 21

20. (tie) Ohio State 7-3-1 12 22

22. Alabama 7-4 11 NR

23. Virginia 8-3 10 23

24. S. Mississippi 8-3 9 23

25. San Jose State 8-2-1 8 25

NR - not ranked