Johns Hopkins University Athletics

Accolades
- Ranks 12^th in school Division I history in career points (161), 13^th in goals (104) and eighth in assists (57)
- Second Team IWLCA All-Mid-Atlantic
- Big Ten Preseason Player to Watch (2019)
- Three-time Big Ten Academic All-Conference (2019, 2020, 2021)
- IWLCA Academic Honor Roll (2021)
- Big Ten All-Tournament Team (2018, 2021)

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2021
- Played all 15 games and started 14; finished with 29 goals, 21 assists and nine ground balls
- Led team in assists; ranked second in goals and points (50)
- Scored twice and picked up three ground balls in season-opener versus Rutgers
- Had back-to-back three-point games (3g, 3a) in two games versus #4 Northwestern
- Scored four goals in game one win at #24 Ohio State
- Tallied an assist and a ground ball in game two win at #24 Ohio State
- Poured in five points (2g, 3a) in overtime loss to #9 Maryland
- Scored in win over #14 Penn State
- Finished with career best six assists and seven points in win over #23 Rutgers
- Totaled three points (1g, 2a) at #11 Maryland
- Handed out three assists and scored in win at #13 Penn State
- Finished with eight goals, three assists and three ground balls in two-game sweep of #23 Michigan
- Tallied five points (4g, 1a) in win at #20 Penn State in Big Ten Quarterfinals
- Scored twice and picked up a ground ball in loss to #13 Maryland in Big Ten Semifinals

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2020
- Started all seven games
- Finished with 16 goals, 12 assists, 10 ground balls and five caused turnovers
- Ranked second on the team in points and assists; ranked third in goals
- Totaled five points (1g, 4a) in win over Drexel
- Scored and assisted on another, to go with two ground balls at #11 Loyola
- Notched back-to-back five-point (3g, 2a) games at #11 Penn and #25 Georgetown
- Tallied 100^th career point, in just 36^th career game, in win at Georgetown
- Scored twice and assisted on a third in win over Furman
- Had second straight two-goal, one-assist game, to go with two ground balls in overtime loss to Hofstra
- Scored four goals and assisted on another in win at Saint Joseph’s

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2019
- Started nine games before suffering an injury
- Finished with 18 goals, 13 assists, nine ground balls and four caused turnovers
- Totaled four points (2g, 2a) and two ground balls in win at Drexel
- Scored in win over #9 Loyola
- Scored twice in overtime loss to #11 Penn
- Finished with four goals and two ground balls in win over #16 Georgetown
- Punched up six points (2g, 4a) in win over Furman
- Notched five points (3g, 2a) in win over Saint Joseph’s
- Scored four goals and added two assists in win at Hofstra
- Handed out three assists in loss to #25 High Point
- Suffered season-ending injury in win over UMBC

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 2018 
- Played 18 games and totaled 41 goals, 11 assists and 52 points
- Led team and ranked eighth in the Big Ten in goals
- Scored a career-best and game-high four goals and had a caused turnover at Georgetown
- Scored and handed out an assist to go with a ground ball in shutout of Furman
- Totaled four points (2g, 2a) and two draws in win over Boston University
- Finished with three points (2g, 1a) in win over Hofstra
- Handed out an assist and grabbed a pair of ground balls in win at UMBC
- Had back-to-back two-goal games against #2 Maryland and at #18 Penn State
- Scored a game-high four goals in loss to #12 Northwestern
- Totaled a game and career-high five goals and six points in win in Michigan
- Finished with a goal and two assists in loss at top-ranked Stony Brook
- Scored three goals and assisted on a fourth in win over Ohio State
- Scored a pair of goals in loss to #8 Towson
- Totaled a game and career-best six goals in win at Rutgers
- Finished with six points (4g, 2a) and one caused turnover in loss to #2 Maryland in Big Ten semifinals
- Notched a hat trick in loss to #7 Navy in NCAA first round

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2017 
- Played five games in rookie season  
- Made collegiate debut in season-opening win at American  
- Controlled a draw in loss at #17 Towson

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At Smithtown High-West
- Played five years of varsity lacrosse and scored over 300 points  
- Four-time all-county selection  
- Led team to 53-14 record in final four years  
- Named All-Long Island as a senior  
- Guided team to second round of playoffs as a freshman and sophomore  
- Lost in semifinals as a junior and Suffolk County finals as a senior  
- Played eight years with Suffolk All Stars/Team 91 All-Stars  
- Also played volleyball and basketball  
- Holds school records for single-season and career kills  

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Personal 
- Mackenzie Heldberg  
- Daughter of Matthew and Lisa Heldberg  
- Mother played volleyball at CW Post
- Father played football at Lehigh  
- Brother, Matthew, plays lacrosse at Bryant  
- Cousin, Kevin Massa, played at Bryant and currently plays in the MLL  
- Cousin Kenneth Massa, plays lacrosse at Bryant and cousin, Michael Massa, played lacrosse at Lafayette
- Cousins, TJ and Kyle Tiernan, played lacrosse at Binghamton and cousin, Justin Tiernan, plays lacrosse at Lehigh  
- Majoring in psychology