Every speed training product in golf has the same structural problem: it works, and then it stops being necessary. A golfer gains six or seven mph over a training block, plateaus, and the hardware goes under the bed. The Stack System has spent five years building the most credible protocol in that category, and the ceiling on that category has always been the business model, not the science.
The answer, announced this week, is the Fall 2026 Seasonal Circuit: an eight-week global wedge competition running on Stack Radar through TheStack App, starting October 3. A new scored wedge combine drops each week, testing carry distance control across varying targets. Players can repeat each combine as often as they want, climbing a global leaderboard, and only their best six of eight weekly results count toward a final season score. Miss two weeks, keep your season.
Why Is The Stack System Moving From Speed Training to Wedges?
Because distance control has no plateau. A golfer who maxes out clubhead speed is finished with the product. A golfer trying to land a 68-yard wedge inside a tight window is never finished, and more importantly, never finished in a way that can be scored. Sasho MacKenzie framed it as adding structure, pressure, feedback and competition to practice, which is accurate, and also a precise description of why someone keeps opening an app.
The scored-test format itself is not new. Trackman built the Combine in 2012 as a 60-shot graded assessment, and it became the standard way fitters and coaches benchmarked a player in a bay. What Trackman never did was serialize it. The Combine was a test you took, not a season you played. The Stack is taking the same idea, stripping it down to one club category, and wrapping it in an eight-week competitive calendar with a drop schedule. That is a Zwift racing season, not a golf assessment.
How Does the Fall Seasonal Circuit Prize Structure Actually Work?
The prize mechanism is the part worth reading twice. Ballots are earned based on season ranking, but anyone who completes a single combine is eligible for the draw. This is not generosity. A winner-take-all leaderboard loses the 70th percentile user by week two, because the outcome is decided and the reason to log a score disappears. A weighted lottery keeps the mid-table player hitting shots in week six. Peloton learned this with its output leaderboards. Whoop learned it with streaks. Golf training aids, as a category, have mostly learned nothing, which is why most of them are sold once and never opened again.
There is also a hardware tell here. Participation requires a Stack Radar and an iPhone or iPad, and the release explicitly tells golfers who do not own a radar that they can join late and still complete a qualifying season. That is a radar sales pitch with a deadline attached. The Stack is competing for the at-home practice hour against Garmin R10, Rapsodo MLM2Pro and Full Swing Kit, all of which measure better or cheaper or both. What none of them own is a training protocol with a research spine behind it. The circuit is The Stack arguing that measurement is a commodity and programming is not.
What Does This Signal for The Stack System's Brand Position?
The brand sits 161st of 215 in the DORMIED Index and moved zero percent month over month, which is exactly what an engineering-led company with tour penetration and no consumer marketing engine looks like. Growth here happens inside the app, among people who already bought in, not in broad channels.
What to watch is whether the spring season expands beyond wedges. If The Stack runs full-bag combines in 2027, this stops being a retention feature and starts being a competing product category: a scored, seasonal, at-home practice league built on hardware it already sold. That is a subscription business wearing a training aid's clothes, and it is a far better business than selling sticks.
