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Height: 5'6"
Year: Junior
City/State: York, Maine
High School: York


Career Statistics


  • NFHCA National Academic Squad (2018)
  • ACC Academic Honor Roll (2017-18, 2018-19)

2019 (Stats): Registered a career-high three points in a victory at No. 25 William & Mary (9/1) ... Notched the first game-winning goal of her career against the Tribe.

2018 (Stats): Played in all 22 contests during Duke's run to the NCAA quarterfinals, starting 12 in the midfield ... Wrapped up the season with five points on one goal and three assists ... Notched first career goal against No. 4 Maryland in the B1G/ACC Cup (9/2) ... Added first career assist the following weekend in a 4-1 defeat of No. 5 Penn State (9/9).

2017 (Stats): Took the field in all 21 contests as a freshman, making four starts in the midfield … Notched a corner against No. 15 Princeton (9/17) … Placed all three shots for the season on cage. 

Prior to Duke: Member of U.S. U19 and U17 junior national teams … Futures Elite selection in 2014 and 2015 and three-time Junior National Camp selection … Named the MAX Field Hockey Northeast Player of the Year in 2016 … Guided York to three consecutive undefeated seasons … Established school records in career goals (88) and assists (57) … Three-time Maine Sunday Telegram Player of the Year … Provided game-winning goal that gave York its third straight Class B state title as a senior … Also tabbed Miss Maine Field Hockey her final year and the Maine Female High School Athlete of the Year as a junior … Four-time all-state pick … Notched career-best 38 goals and 21 assists as a senior … Also lettered four years in basketball, leading York to the 2016 state title and an undefeated record … Member of the National Society of High School Scholars and the Spanish National Honor Society.

Personal: Born Lilian Lee Posternak Nov. 18, 1998 in Portsmouth, N.H. … Daughter of Dan and Kristin Posternak … Has three brothers (Matt, Jake and Jared) and one sister (Cari) … Sister played one season of field hockey at the University of New Hampshire.

Career Highs:
Goals: 1 ... 2x, last at William & Mary ... Sept. 1, 2019
Assists: 1 ... 4x, last at William & Mary ... Sept. 1, 2019
Points: 3 ... at William & Mary ... Sept. 1, 2019
Corners: 6 ... vs. Liberty ... Aug. 26, 2018

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FH: Sahaydak Game Winner vs. Miami
FH: Pam Bustin Postgame Interview - NCAA First Round
FH: Olivia Sahaydak Postgame Interview - NCAA First Round