This interactive scatter plot visualizes baseball hitting metrics, plotting bat speed against exit velocity for individual swings. The chart cycles through different x-axis metrics every five seconds, animating the transition of points, axes, and labels. Built with React and D3 v7, it uses `d3.csv` to load the dataset, `scaleLinear` and `axisLeft`/`axisBottom` for scales and axes, and `transition` with staggered delays to smoothly move circles between positions. The SVG rendering updates in place via D3's join pattern.