Not every line move is worth the same. SharpROI grades each one from C1 to C4 ā three of them measure how hard the smart money pushed, and the fourth flags when it happened.
Sharp money rarely shows up as one dramatic swing. It leaks into the market a piece at a time. A handicap opens at one number and, as professional money lands, the book nudges it a quarter-goal at a time ā Home -0.5 becomes -0.75, then -1.0. SharpROI counts those quarter-goal moves. One rung is one step. That's the unit everything else is built on.
We don't count every flicker. Odds twitch constantly as books balance their own books, and most of that is noise. So before a move counts as a step, it has to clear a filter that strips out the tiny, self-cancelling wobbles a quiet market throws off. What's left is a real change in the line ā the kind that happens because someone with an opinion and a bankroll took a side. Count the genuine rungs from open to now and you've got the size of the move. That, in a sentence, is what sharp money looks like on a screen.
The first three categories are pure distance:
A worked example. A match opens with the home side at -0.5. Over the afternoon it drifts to -0.75 (C1), then -1.0 (C2), then -1.25 (C3). Same direction, three clean rungs, money stacking on the home side the whole way. By the time it's a C3 the move is strong ā and occasionally stretched far enough that it's worth watching what happens after kickoff, because over-extended lines can drift back. We keep C3 moves on a short post-kickoff watchlist for exactly that reason.
Higher number, bigger move. That part's simple. Just don't read it as "bigger move equals guaranteed winner." A move tells you where the money went, not how the match ends ā steam and line movement goes deeper on why the two aren't the same thing.
C4 breaks the pattern, and people get this wrong all the time. It is not "stronger than C3." It sits on a different axis. C4 is a timing flag.
A move earns C4 when it lands inside the last 75 minutes before kickoff, and either the line shifts or one side's price drifts at least 7% on its own in that window. That late window matters because it's when the sharpest, best-informed money tends to arrive ā confirmed team news, a late injury, the closing scramble. A quiet line that suddenly twitches 40 minutes out is often the most telling move of the day.
So a signal can be C2 and C4 at the same time: a two-step move that happened to fire in the kickoff window. The C4 isn't ranking it above a C3 ā it's telling you the move is fresh and late. Treat C4 as a "pay attention now" stamp, not a quality score.
Think of C1 to C3 as conviction and C4 as urgency. A C1 is a heads-up ā worth a spot on your watchlist, not your bet slip. C2 and C3 carry more weight; the market has committed, and a C3 with a clean one-directional path is about as plain a footprint as you'll see before kickoff. C4 is the nudge that the sharp window is open right now and the price may not last.
The categories don't replace judgement ā they focus it. Pair them with the value on offer that day, and after the fact with closing line value, which is the honest scorecard for whether you actually beat the market. A strong category that also banks positive CLV is the combination worth chasing. You can see how it plays out across our full, public record on the results page, and the wider method on how it works.
No, and this trips a lot of people up. C1 to C3 measure how far the line travelled ā one, two, or three-plus quarter-goal steps. C4 measures when the move happened, not how big it was. A C4 fired inside the last 75 minutes before kickoff, in the window where the sharpest late money tends to land. A move can be both C2 and C4. Read C4 as "this is happening late and fast," not as a higher grade.
One step is a single quarter-goal move in the handicap line, measured from where it opened to where it is now. Home -0.5 drifting to -0.75 is one step; carrying on to -1.0 is two. SharpROI filters out the tiny, self-cancelling odds wobbles a quiet market makes, so only genuine shifts count toward the step total.
A higher category means a bigger or later move, not a guaranteed result. The category tells you where sharp money went and how committed it looks. Whether that turns into value depends on the price you can still get, which is why we grade every signal on closing line value after the fact rather than on whether a single bet won.
The categories describe the strength and timing of a move; they're a lens, not a hard on-off switch. Smaller early moves like C1 and C2 are useful context and watchlist material, while three-step C3 moves and late C4 flags carry the most weight. The aim is to show the whole picture and let you decide.
SharpROI scores every football & basketball signal on closing line value ā fully public.