The highest point the ball reaches during its flight, measured in feet above where it started. It's the payoff of launch angle plus spin working together, and it tells you a lot about how the ball will land. A high apex means a steep descent — the ball stops quickly, which is exactly what you want into greens (tour 7-irons peak near 90 feet, about a 9-story building). A low apex means shallow descent and lots of rollout — fine off the tee, trouble when you need to hold a firm green.

The highest point the ball reaches during its flight, measured in feet above where it started. It's the payoff of launch angle plus spin working together, and it tells you a lot about how the ball will land. A high apex means a steep descent — the ball stops quickly, which is exactly what you want into greens (tour 7-irons peak near 90 feet, about a 9-story building). A low apex means shallow descent and lots of rollout — fine off the tee, trouble when you need to hold a firm green.