A multiline chart displays weekly power scores for eight teams across eight weeks, with a clickable legend highlighting team names and interactive hover effects that thicken lines. The visualization is built with D3 v5, using SVG rendering, `d3.nest()` to group data by team, `d3.line()` for path generation, and `d3.scaleOrdinal` with `d3.schemeCategory10` for colors. It includes axis labels, a dashed baseline, and a filterable legend with custom click handlers.