When a pressing player continuously tracks a ball-carrier, multiple sequential pressure event records are generated — one for each moment of re-engagement. These records can be chained into a direction vector showing the path and velocity of the press approach. Duration is the period during which the presser is actively tracking or blocking; chaining multiple records reveals how a defender closed down, not just that they pressed.
Correct use: collect all pressure event records for a presser-pressured pair within a continuous engagement window, order by timestamp, compute position deltas to derive approach angle and closure speed, and visualize as an arrow showing direction of press origin. This allows teasing out not just that pressure came, but from which flank, at what speed, and whether it was a closing-down press or a passive lane-blocking press.