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美国大学棒球体系 | U.S. College Baseball System
美国大学棒球主要通过 NCAA（全国大学体育协会）和 NAIA（全美校际体育协会）组织，分为三个级别：
NCAA Division I：竞技水平最高，提供全额奖学金（如范德堡大学、路易斯安那州立大学）。
NCAA Division II/III：学术与运动平衡，DII提供部分奖学金，DIII无体育奖学金。
NAIA & NJCAA：社区大学和私立学院，招募灵活性更高。
College baseball in the U.S. is organized through NCAA and NAIA, with three main divisions:
NCAA D1: Highest competition level (e.g., Vanderbilt University, LSU), offering full scholarships.
NCAA D2/D3: Balance academics and athletics; D2 offers partial scholarships, D3 no athletic scholarships.
NAIA & NJCAA: Community colleges and private schools with flexible recruitment.
升学核心路径 | Key Pathways
运动员招募 | Athletic Recruitment
高中表现: 需在比赛中展示技能（如投手球速、打击率）。
联系教练: 通过邮件/视频主动联系目标学校教练，参加夏令营或展示赛。
学术要求: 最低GPA 2.3（NCAA）或 2.0（NAIA），需通过SAT/ACT考试。
High School Performance: Showcase skills (e.g., pitching velocity, batting average).
Contact Coaches: Email coaches, attend camps/showcases.
Academic Standards: Minimum GPA 2.3 (NCAA) or 2.0 (NAIA), SAT/ACT required.
Walk-On尝试 | Walk-On Trials
未被招募的学生可通过公开选拔加入校队。
Unrecruited players can try out for teams during open trials.
学术优先录取 | Academic Admission
学术成绩优异者可通过常规申请入学，再尝试加入棒球队。
Strong students apply academically first, then try out for the team.
关键时间线 | Key Timeline
9-10年级: 开始建立运动履历，参加AAU/USA Baseball等赛事。
11年级: 注册NCAA Eligibility Center，向目标学校提交运动简历和比赛录像。
12年级: 签署NLI（国家意向书），完成大学申请。
Grades 9-10: Build athletic profile via AAU/USA Baseball tournaments.
Grade 11: Register with NCAA Eligibility Center, submit sports resume/video.
Grade 12: Sign NLI (National Letter of Intent), complete college applications.
Success Stories
大谷翔平: 曾就读日本高中，后通过国际招募进入MLB。
Alex Bregman: 通过路易斯安那州立大学（NCAA D1）进入职业联盟。
Shohei Ohtani: Joined MLB via international recruitment.
Alex Bregman: Played at LSU (NCAA D1) before turning pro.