<![CDATA[The jumping motion when heading the ball in football varies depending on the conditions. This study aims to analyze the phenomenal jump of En-Nesyri at the 2022 World Cup from a kinematic perspective. The data was collected through digitization techniques from a demonstration of the jump and analyzed using cubic spline interpolation with two boundary conditions: natural and not-a-knot. The object of this study is En-Nesyri’s jump, which reached 2.78 meters when heading the ball during the match againts Portugal. The results show the kinematics of the jumping motion, including position, velocity, and acceleration. Additionally, differences between cubic spline interpolation with the two boundary conditions were observed. At 1.5 seconds, the head reaches its maximum height. The analysis indicates that the cubic spline with the not-a-knot boundary condition is more suitable for modeling phenomenal jump that do not start from a stationary position]]>
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