YAIAA boys' basketball power rankings, Jan. 4

Back to our usual Wednesday rankings this week. Our top five feature a few shake-ups. South Western toppled William Penn in Tuesday's marquee matchup, a result which secured the Mustangs the top spot this week. Check out the jump to see who came in behind them.

Last week's rankings here.

1. South Western (T-1) -- Lots of impressive qualities to the Mustangs' big win Tuesday. One was their compsoure -- they played the game at their speed, and never let William Penn's fast-breaking offense get going. Then there was South Western's balanced scoring. Jamahn Lee led the team with 18 points, while top scorers Mike Duffy and Parker Bean settled for 12 and 10 points, respectively. It's too early to peg South Western (10-0) as a surefire favorite in Division I; the division is deep, and there are still too many teams that could factor into that race. But the Mustangs have definitely put themselves in position to threaten William Penn's three-year run as division champs. This team is legit.

2. Dallastown (4) -- A buzzer-beater loss to Cedar Cliff aside, the Wildcats continue to progress. The Colts look like one of the district's top teams, and Dallastown took them down to the final second. The Wildcats are now 8-3 overall, and a game behind South Western in Division I. Dallastown will play another doozy Friday, too, when it hosts William Penn. That should be a big one for both teams.

3. William Penn (T-1) -- Bit of a gut-check time right now for the Bearcats (6-3) who have lost two in a row now for the first time since the 2010 District 3-AAAA playoffs. William Penn's normally potent offense sputtered Tuesday, managing just 47 points in a loss to the Mustangs. That's 35 points below what the Bearcats had been averaging this season. Interested to see how William Penn reacts in what, given the circumstances, has to be considered their biggest game of the year Friday.

4. York Suburban (5) -- The Trojans staked their claim as the Division III favorite on Tuesday, beating a resurgent Bermudian Springs side, 61-52. Ted Hinnenkamp continued his impressive senior campaign with a 26-point, 16-rebound performance, and fellow forward Jacob Castaldi pulled down 17 rebounds of his own. Really interesting matchup on tap for the Trojans this Saturday night, when they host a dangerous West York side.

5. New Oxford (NR) -- This week's surprise inclusion knocked off last week's surprise inclusion, West York, on Tuesday. The Colonials (6-3) continued their phenomenal turnaround, from one-win team a year ago to a potential Division II dark horse this season. Andre Marshall is a big reason why. He dropped 32 against the Bulldogs, and is now averaging 20 points per game. He's scored at least 25 in each of his last three games.

Honorable mention (alphabetical order): Bermudian Springs (7-3), Central York (6-3), Delone Catholic (5-2), Dover (5-4), Northeastern (4-3), West York (4-4), York Catholic (5-2)