CourtCraft Tennis Geometry & Rally Lab

Tribute to David Goffin's Precision Counterpunching

David Goffin’s career is celebrated for peak tactical IQ, taking the ball early on the rise, and altering cross-court trajectories inside baseline exchanges. Instead of relying purely on heavy 200 km/h baseline power, his game modeled the modern counter-strike: taking away an opponent's recovery window by borrowing incoming pace and clipping sidelines.

This simulator computes realistic ball arc, net clearance margin, court bounce friction, and defensive recovery distance. When you change the angle and spin above, watch how the opponent's required recovery time shifts from comfortable (green) to compromised (red).

Key Tactical Geometric Rules

• 1. The High-Percentage Cross-Court The net is lowest at the center (36 inches / 0.914m) and the diagonal distance is 82.5 ft versus 78 ft down the line, yielding 4.5 extra feet of depth leeway.
• 2. The Down-the-Line Trigger Changing direction down the line passes over the highest portion of the net (42 inches at posts). Requires earlier preparation and at least 30cm clearance margin.
• 3. The Recovery Pivot Hitting an extreme angle forces the striker to recover past center toward the open diagonal, exposing the opposite corner if pace is redirected.