“Y fuera,” was the chant that filled the Lawrence gymnasium Friday night, as the Lawrence boys’ volleyball squad shut down Merrimack Valley Conference foe Haverhill, 3-0 (25-11, 26-24, 25-12).

The translation, “and it’s out,” came in handy after Lancers senior Jeyson Henriquez forced a handful of errors on Haverhill’s defense with block-kills and consistent coverage.

After finding out his twin brother Anibal would be sidelined with a sprained ankle, Jeyson set the tone in the first set for a 23-8 lead after pounding past a double-block.

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“If [Anibal’s] not on the court, everyone’s looking up to me and follows me and I have to step up,” said Jeyson, a Daniel Webster-commit and Merrimack Valley Conference All-Star.

Lefty Bryan Camilo launched a spike down the line, winning it, 25-11.

The same plan didn’t work quite as well in the second set as the Lancers barely squeezed by with Haverhill’s Dylan Copeland picking up power.

“The second set they went haywire,” said Lancers coach Tony Hajjar. “It’s a habit we have: We win the first and they sit down thinking they have it.”

A Camilo spike and a Reibin Hiraldo service ace tied the second set at 24. A Haverhill error decided matters.

In the last set, Haverhill’s lack of coverage led to its demise, 25-12.

St. John’s Prep 3, Xaverian 0 — Senior outside hitter Brian Keough recorded seven kills to lift the Eagles (7-0).

Cambridge 3, Somerville 0 — The top-ranked Falcons (6-0) remain undefeated behind senior setter Rodolfo Bonates’s 10 aces.

Brighton 3, Madison Park 0— Senior outside hitter Joshua Hopkins notched 16 service points and senior setter Gustavo Silva added 12 spikes to power the Bengals (1-2).

Andover 3, Billerica 1 — Junior outside hitter Alec Bean had 15 kills for the Golden Warriors.

Randolph 3, O'Bryant 1 — Senior Greg Swain had 15 kills, and teammate Tommy Nguyen added 13 assists to lead the Blue Devils (2-4).

North Quincy 3, Brockton 0 — Senior captain Mike Tran had 17 kills for the Red Raiders.

Boys’ lacrosse

Mystic Valley 5, North Shore 2 — Freshman midfielder Jayden Jean had three goals for the Eagles.

Girls’ lacrosse

Arlington Catholic 10, Archbishop Williams 8 — Junior Megan Messuri scored a hat trick and added an assist to lead the Cougars (5-1).

Watertown 20, Burlington 7 — Sophomores Kayla Johnson (six goals) and Emily Loprete (four goals) combined to lead the Raiders (4-0).