This visualization shows pass connections among Real Madrid's starting players during the first half of their September 23, 2014 match against Elche. Player positions appear as circles overlaid on a soccer pitch, with curved arcs linking them; arc thickness reflects the number of passes between two players. Hovering over a player highlights outgoing passes in blue and incoming passes in orange, while a tooltip displays the player’s name, number, and position. The code uses D3.js and the `d3.rollup` library to aggregate pass data from a JSON file, rendering the pitch from an SVG template and animating interactions via D3 transitions.