In a girls hockey season filled with parity, four teams remained unbeaten entering the final week of the regular season.

None of them are unbeaten anymore to highlight what could be another topsy-turvy tournament.

Top-seeded Hingham (19-1-1) was the last of the unbeatens and topped almost every contender in its path. Caroline Doherty (200-plus points), Addy Garrity (100 points) and junior defenseman CC Flynn help lead an ultra-talented, ultra-tight and ultra-deep group in a special year. One opposing coach believes No. 2 Notre Dame Academy of Hingham (13-3-3) is the most complete team with a wealth of returners from last year’s finalist run starring again, and their results back up their stance as the other favorite to reach TD Garden.

Third-seeded Malden Catholic (14-2-4) looks fit for a return to the Final Four, and an earlier tie with NDA and a one-goal loss to Hingham suggest it could go the distance. No. 4 HPNA (14-2-5) has struggled to shut the door on some teams in a loaded MVC/DCL Large, but it has one of the state’s top goalies (Julianna Taylor) and defensemen (Paige Nottingham) within a deep lineup.

All four are Final Four-caliber, but there aren’t many pockets across the brackets they can feel safe in.

Fifth-seeded Archbishop Williams (16-4-2) is another group that’s taken down many of the state’s juggernauts and lost just one player from last year’s trip to the Final Four. No team was more practiced at winning one-goal matchups than defensive force No. 6 Methuen/Tewksbury (16-1-3), who went 11-1-3 in such games. Seventh-seeded Bishop Feehan (15-5-2) fell to NDA and Malden Catholic earlier but have delivered otherwise to help pose a real threat.

Former Hingham coach Tom Findley once said to never sleep on the Middlesex League, and three of the best in the Liberty division could stand right in his former team’s way.

If No. 17 Arlington (13-8) can best goalie Adrianna Boucher and No. 16 Shrewsbury’s talented top line, it’ll be tough. No. 8 Belmont (15-1-4) allowed the state’s third-fewest goals this year and could be next if it can beat No. 9 Reading (13-6-1), which just handed Methuen/Tewksbury its first loss and is on an 8-2-1 stretch.

No team has allowed fewer goals than No. 12 Peabody/Lynnfield/North Reading (15-3-2), which narrowly lost to Malden Catholic and tied HPNA.

No. 10 Andover (9-6-5) is a top sleeper and just tied both NDA and Malden Catholic in the Hingham Showcase.  No. 11 Billerica/Chelmsford (15-5) has an elite top line and a premier goalie in Hailey Graybeal, but it’s in for a tough first round against a No. 22 Boston Latin (5-13-4) group that beat it earlier.

No. 21 Waltham (13-5-2) handed Belmont its first loss and is a threat. Reigning champion St. Mary’s had a tough start to the year, but a string of one-goal losses to contenders before beating Hingham showed it could still make noise. Facing No. 19 Winchester (8-9-3) in the first round is a brutal challenge to start with.

No. 13 Natick, No. 15 Bishop Stang, No. 18 Winthrop, No. 24 Pope Francis and No. 25 Arlington Catholic are also candidates to cause trouble.

In Div. 2, Hingham is the only team to beat No. 1 Westwood (18-1-1) this year. Kate Sullivan is a premier forward, and she paired with fellow senior captains Ava Themistocles and Hayden Cox to help bond a young group into a tight-knit power.

Second-seeded Duxbury (15-5-2) lurks around the corner in search of a third straight title. The Dragons have a wealth of championship experience and some of the state’s best players in Sami Norton (defense), Addy Harrington (forward), Zoey Madigan (forward) and Megan Carney (forward), to pose an excellent chance at a three-peat.

More Middlesex League foes stand in the way. No. 3 Woburn (13-6-1) was among the best in the Liberty and is a program that’s used to producing Final Four appearances. No. 5 Burlington (14-6) has the state’s smallest roster, but Caitlyn Trembley and Emma Steiner have dazzled to help lead its current nine-game win streak.

Fourth-seeded Algonquin (13-4-3) was arguably Duxbury’s toughest playoff matchup last year in the state semifinals, and much of its returning core put it back in position for another title run. No. 6 Milton (16-3-2) hasn’t lost in 14 games to also pose a major threat.

The Patriot League is loaded with sleepers. Star forward Kayla Leonard and No. 7 Marshfield (11-7-2) played Duxbury tough both times – with one tie – and could have another crack in the state quarterfinals. No. 11 Plymouth (11-7-2) nearly beat Marshfield twice and looks fit to make noise. Don’t count out No. 17 Norwell/Scituate/Abington (13-7-1) or No. 21 Pembroke (8-11-1).

Eighth-seeded Auburn (13-3-5) has the defense and goaltending to be trouble. Better consistency could see No. 9 Falmouth (11-8-1) make a bit of a run. No. 10 Sandwich (12-9-1) closed the year on a 5-2 stretch for momentum. No. 15 King Philip (15-6) won the Hockomock League for the first time and has a chance to go 3-for-3 against No. 18 Canton (11-7-2).

No. 19 Norwood, No. 20 Hopkinton/Dover-Sherborn and No. 23 Melrose are upset threats.

PREDICTIONS

Champion: No. 1 Hingham
Final Four: No. 1 Hingham, No. 2 NDA (H), No. 5 Archbishop Williams, No. 6 Methuen/Tewksbury
Sleepers: No. 10 Andover, No. 14 St. Mary’s (L)
Potential Upset: No. 22 Boston Latin over No. 11 Billerica/Chelmsford
Best First-Round Matchup: No. 12 PLNR vs No. 21 Waltham (Wednesday, 5:15 p.m.)

Champion: No. 2 Duxbury
Final Four: No. 1 Westwood, No. 2 Duxbury, No. 3 Woburn, No. 4 Algonquin
Sleepers: No. 7 Marshfield, No. 11 Plymouth
Potential Upset: No. 20 Hopkinton/D-S over No. 13 Medfield
Best First-Round Matchup: No. 15 King Philip vs No. 18 Canton (Wednesday, 7:30 p.m.)