“…By having a very good level or degree of reliability, the serve test for the Sepak takraw test can be used to measure serve skills for sepak takraw (Miller, 2013). This can increase the player's confidence and can be conveyed to the coach so that psychological stress when serving on Sepak takraw can be avoided, because stress is a condition of a person's reaction both physically and emotionally (mentally / psychologically) when there is a change in the environment that requires a person adjust (Mohd & Ahmad, 2005;Persetasi, 1994;Revelle & Zinbarg, 2009;Ruskin, 2006;Suhron, 2016;Suhron, 2017;Suhron & Amir, 2018;Suhron & Zainiyah, 2021). Serving in Sepak takraw can increase the self-esteem of players and coaches when serving on Sepak takraw so that score wins can be obtained, self-esteem is a person's self-assessment in assessing themself, including their abilities (Suhron et al, 2017;Suhron et al, 2019).…”