Littlestown's last-second 12-10 victory over Bermudian Springs last Friday night shook up the District 3-AA power ratings.
Littlestown, which began the week in the No. 3 slot, moved up to No. 2, while Berks Catholic ascended from No. 2 to No. 1.
Bermudian Springs slipped from the top spot to the No. 3 position.
All three teams will be involved in the district playoffs, which begin on Friday, Nov. 8.
The final power ratings, and opening-round matchups, will be determined following this weekend's final regular-season games.
The current ratings have Littlestown (9-0) matched up against No. 7 seed Newport (5-4), and Bermudian Springs (8-1) against Hamburg (5-4), the No. 6 seed.
Meanwhile, in Class A, Fairfield and York Catholic stayed at No. 2 and No. 3, respectively, following victories.
If the Green Knights (6-3) and Fighting Irish (6-3) finish in those spots, they would meet in the first round of districts, with Fairfield having the home-field advantage. The Green Knights edged the Fighting Irish, 13-12, in Week 3.
Fairfield travels to Littlestown on Friday night, and York Catholic plays host to York Suburban.
Four other York-Adams teams currently occupy district playoff spots.
In Class AAAA, Dallastown is No. 4 and Central York is No. 7, and in Class AAA, Dover is No. 6 and New Oxford is No. 13.
Provided there are no changes following this weekend's games, the match-ups would be: Dallastown vs. No. 13 Harrisburg; Central vs. No. 10 Penn Manor; Dover vs. No. 11 Susquehanna Township and New Oxford vs. No. 4 Conrad Weiser.
Meanwhile, Spring Grove and Red Lion are both on the playoff bubble.
The Rockets, ranked No. 17 in Class AAA (16 teams qualify) need to defeat South Western on Friday night and hope that one of the teams right above them loses. The Lions, No. 18 in Class AAAA (16 qualify), have to defeat Dallastown and hope two of the teams right above them lose.