Everybody practices straight putts. Everybody practices big, sweeping breakers because they are fun. But the putts that actually wreck your score are the subtle ones, the 8 to 12 footers with just a whisper of break. You read them straight, start them on line, and watch them slide by on the low side. Again.
Subtle breakers do not need a bigger stroke. They need a better start line. On any breaking putt, the ball has to start on the high side so gravity can bring it back to the hole. Miss on the low side and it never had a chance. The problem is that most golfers cannot see a subtle break, so they cannot commit to a high enough start line. This drill fixes both.
Set four tees around the hole to make four quadrants. For a right-to-left breaker, pull the left tee and the back tee, leaving the front tee and the right tee in place. Those two remaining tees are your gate, sitting on the high side of the break. Now here is the part that makes this drill work: lay a 2x4 on your start line. A 2x4 beats an alignment stick here because it is a real wall. Your putter blade has to stay square against it, which forces a pure stroke with no steering. Stroke 10 to 15 putts through the gate. Start the ball high, on the pro side, and trust the break to bring it in. Do not guide it. Let it go.
What you are training is commitment. The gate shows you exactly where the high side is, the 2x4 keeps your stroke honest, and repetition teaches your eyes what a correct start line looks like on a subtle breaker. After 15 putts through the gate, step back and hit a few without it. You will start seeing the break you used to miss.
The mistake to avoid: steering. The moment you try to guide the ball toward the hole, you decelerate, the face twists, and you miss low anyway. Subtle breakers demand a confident stroke on the high line. Pick the line, trust it, and roll it.
High-side gate. Trust the break. Stop missing on the low side.
This is one of 220+ drills in the Pro Vault at coachellapro.com, $1 a month, every one with video and a practice plan. And if your putting needs a trained eye, I do that all day in La Quinta. Book through the site.