Putting Instruction
Stephen Sweeney's putting drill targets missed putts

GOLF Top 100 Teacher Stephen Sweeney has shared a putting drill in The Lab that is built to expose the reason behind your missed putts.
GOLF Top 100 Teacher Stephen Sweeney is the featured instructor in the latest edition of The Lab, according to the GOLF report. The piece presents a putting drill meant to reveal the root cause of missed putts. The headline describes Sweeney as a Tour coach, and the writer says the drill changed how they practice. Read the full report.
The wire summary does not lay out the steps of the drill, so GNN will not guess at them. The framing is still useful. Most amateur practice sessions on the green are repetition: roll a handful of balls, count the makes, move on. A drill built to diagnose why a putt misses shifts the goal from results to cause. That is how instructors at the top of the game tend to structure practice, and it is a different habit from simply hitting more putts.
Practice should find the cause, not repeat the miss.
Diagnosis matters because a missed putt can come from several places. Poor start lines, misjudged speed and a bad read all end the same way, with the ball outside the edge of the cup. Without a way to separate them, players often fix the wrong thing. Any drill that isolates the cause gives practice time a clearer purpose.
Readers who want the specifics should go to the original instruction piece. If you test the drill, run it for several sessions before judging it. One round on the practice green is not enough to show whether your misses come from one source or from a mix.