<b>Dataset for: First-Serve Advantage and Emerging Tactical Limitations in Elite U-14 Boys’ Tennis</b>

This dataset supports the study <i>“Serve Dynamics and Tactical Trends in Elite U-14 Boys’ Tennis”</i> published in <b>Applied Sciences</b> (MDPI). The research analyzes tactical patterns and serve effectiveness in elite U-14 international boys’ tennis, based on an observational analysis of <b>971 points</b> from the quarterfinals to the final of the <b>Les Petits As 2023</b> tournament.Data were collected using the <b>OBSTENNIS-JUNIOR-S23</b> observational instrument and recorded with <b>LINCE PLUS</b> software. The dataset was processed and analyzed using <b>IBM SPSS Statistics 25</b>, focusing on serve type, serve placement, rally length, player positioning, and serve + 1 shot outcomes.FilesThe repository contains a single file titled <b>“DATASET U14 BOYS”</b>, which includes the complete database in <b>IBM SPSS (.sav) format</b>, enabling replication of the statistical analyses and facilitating future comparative or longitudinal research in junior tennis performance analysis.