What started as a tightly contested Catholic Conference battler turned into a blowout as St. John’s Prep defeated Catholic Memorial, 4-1, at Water Brown Arena on Saturday.

It would have been hard to find any audience member who would have guessed the eventual outcome after the first period, as St. John’s (6-2) had just one shot on goal in the first 15 minutes.

“We played with a lot of energy and a lot of confidence,” said CM coach Bill Hanson.

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Senior forward Liam Coughlin scored six minutes into the contest for CM (8-2), thanks to a defensive miscue and a terrific shot on goalie Billy Price.

“Liam is such a great player, he can get the puck on net from anywhere,” Price said of his opponent.

Price settled down almost immediately after the goal, however, helping revitalize St. John’s, as it took control of the game beginning in the second period. What led to the offensive outburst from St. John’s was a line change from Eagles coach Kristian Hanson.

“After getting off just one shot in the first, we felt we had to make a change. We thought it would spark the offense and fortunately for us, it did,” Hanson said.

Hanson’s team scored two goals in just over 30 seconds late in the period. The Eagles’ first goal was scored by senior forward Mark Azarian, who took a pass and redirected it past CM freshman goalie Brandon Collett. Senior forward Justin Longo delivered the second score off a rebound.

The third period featured more of the same from the Eagles, who added two goals to the scoreboard.

Lincoln-Sudbury 3, Methuen 2 — Senior Jordan Down had a hat trick, his second of the season, to lead the Warriors (7-0-2). Junior Ryan Jones and freshman Eric Holden contributed two assists.

Wilmington 3, Burlington 1 — Austin O'Neal scored his first goal of the season, unassisted at 13:56 in the second period, to lead the defending Division 2 state champion Wildcats (8-1).

Cathedral (Springfield) 3, BC High 2 — The No. 9 Panthers (8-0-1) got a power-play goal from Jack Williams in the third period to hand the top-ranked Eagles (6-1-2) their first loss.

Winchester 3, Arlington 0 — Sophomore James Offner recorded a shutout for the eighth-ranked Sachems (6-0-2).

North Attleboro 2, Oliver Ames 1— Matt Raposa had 46 saves for the Red Rocketeers (7-1).

Girls’ hockey

Burlington 6, Wilmington 4 — Freshmen Kelsey Ryan and Caroline Morison scored in the win for the Red Devils (2-5).

Marblehead 7, Winthrop 4 — The Magicians (4-4) got four goals from Brittany Smith.

Methuen 3, Chelmsford 2 — Sophomore Amanda Conway scored a pair of goals and seventh-grader Kelly Golini added another in the win.

Medford 8, Shawsheen 2 — Junior center Brittani Lanzilli led the Mustangs (4-2-1) with four goals and an assist.

Girls’ basketball

Martha’s Vineyard 74, Norton 51 — Katie Stewart scored 20 points for the 9-1 Vineyarders.

Archbishop Williams 59, St. Mary’s 40 — Alana Gilmer scored 15 points and Sara Ryan added 10 for the No. 4 Bishops.

Wrestling

Plymouth South 45, Methuen 31 — Led by junior Caelon Smith’s win at 160 pounds, the Panthers beat defending Division 1 state champion Methuen, one of four wins on the day for Plymouth South (19-0). For Methuen, the loss broke a 32-match win streak. Plymouth South also recorded wins over Triton (42-15), Lexington (45-21), and Newton South (72-12). Ryan Harty and Shane Mulligan each won four matches.

Standings

The Globe begins winter standings calls Sunday. League representatives can call between 1 and 6 p.m. at either 617-929-2860, 2861, or 3235. Our toll free number is 800-232-2860. Scoring leaders can be e-mailed to hssports@globe.com.