Mac O'Keefe was a part-time player for Syosset's boys lacrosse team as a freshman last season. So in case his name is unfamiliar, this is what you should know about him:

He sharpened his skills the past three years playing box lacrosse -- an indoor game originated in Canada -- where he developed a knack for behind-the-back and no-look shots in tight places.

The sophomore has verbally committed to Penn State and leads Syosset in scoring with 70 points -- 45 goals and 25 assists.

On Tuesday, he led Syosset to a county final appearance.

O'Keefe had five goals and two assists and Alex Concannon added four goals as No. 2 Syosset topped No. 6 Hicksville, 21-9, in a Nassau Class A semifinal at Hofstra. Syosset (13-4) plays the winner of Massapequa-Farmingdale at 3:30 p.m. Tuesday at Hofstra.

"Last year we didn't make it to the county final and the season didn't go as planned, so this year has been all about getting to this point," O'Keefe said. "I think I was given a bigger role this year, so it's good that we made it to this point."

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The chemistry between O'Keefe and Concannon, a junior, is undeniable. "I love playing with Mac," Concannon said. "We really became good friends and evolved together this year. Last year he was on and off with one of our other guys so this year, him being on the field all the time is a big help for us."

Michael Elardo had three goals and two assists, Anthony Carchietta added two goals and two assists and Nick Hatzipetrakos and Mike Hatzopoulos each scored twice as Syosset led 10-1 with 7:01 left in the second.

Hicksville (9-8), led by Pat McCormick's hat trick, came within four goals of tying the score on three occasions during the third quarter, but was held scoreless in the fourth.

"We knew they were going to come out of a zone so we knew we had to cut a lot more," Concannon said. "That was a big adjustment and it worked."

Syosset coach John Calabria said O'Keefe played only one quarter per game last year, yet he scored nearly 30 points.

"We knew coming in that he was somebody the other team had to contend with," Calabria said. "And he's at a point where he understands the game better than anyone we have."