How Greyhound Grading Works — A1 to A11 Explained

The Grading System at a Glance

Every greyhound has a grade. That grade tells you its speed ceiling — or more precisely, the speed bracket the racing manager has placed it in based on recent performance. The UK grading system is the mechanism that keeps greyhound racing competitive, ensuring that dogs of similar ability race against each other rather than letting the fastest animal in the kennel win every night unchallenged.

The system uses a letter-number combination. The letter indicates the race type: A denotes standard middle-distance races (the most common), D is for sprints, S for staying races, and other codes cover marathons, hurdles, and puppy races. Within each letter, a number provides finer classification — A1 being the top of the standard-distance grade, with higher numbers representing progressively slower dogs within that category. The exact number of subdivisions varies by track and the size of its racing pool — some tracks run grades from A1 down to A11 or even A12 — but the principle is consistent across all GBGB-licensed venues.

Grading is based primarily on finishing times over the standard race distance at a particular track. A dog that consistently clocks faster times will be graded higher — closer to A1; one that posts slower times or finishes behind its competitors will sit in a lower grade, such as A6 or A8. This means grades are track-specific. An A3 dog at Romford, where the sprint distances and sharp bends produce certain time profiles, is not directly comparable to an A3 dog at Towcester, where the longer straights and sweeping bends produce different figures. The letter and number describe where a dog sits within a single track’s ecosystem, not across the entire national circuit.

For bettors, the grading system provides immediate context. When you look at a six-dog racecard for an A4 graded race, you know that all six runners have been assessed as roughly similar in ability over that distance at that track. The field should be competitive. In theory, any dog could win. In practice, the grade is just the starting point — form, draw, and fitness separate the contenders from the also-rans within that bracket.

How Dogs Move Between Grades

Win two in a row and expect a grade rise. The system self-corrects relentlessly. Dogs that win consecutive races are typically promoted to a higher grade for their next outing, on the logic that they have proven too good for their current level. Conversely, dogs that finish last or near the back of the field in successive outings will be dropped down, giving them a better chance of competing against weaker opposition.

The racing manager at each track is responsible for grading decisions. This is not a purely algorithmic process. While times and finishing positions are the primary inputs, the racing manager also considers factors like trouble in running, the quality of opposition, and whether a dog was returning from injury or a break. A dog that finished last because it was baulked at the first bend is unlikely to be graded as harshly as one that simply wasn’t fast enough. There is an element of human judgement in every grading decision, which means occasional inconsistencies — and occasional opportunities for bettors who pay attention.

The speed of grade changes varies. Some dogs are promoted quickly after a couple of strong performances; others linger in a grade for several races before the manager moves them. A dog that wins its first two races in A6 company might jump straight to A4 rather than moving incrementally to A5. The size of the jump depends on the margin of victory, the quality of the time, and how much headroom the racing manager believes exists.

This constant churn is what makes greyhound racing both challenging and rewarding for bettors. The field composition changes from week to week as dogs move up, move down, or transfer between tracks. A dog that was outclassed in A3 last Wednesday might reappear in A5 on Saturday with a genuine chance. Keeping track of these grade movements — and understanding what they mean — is one of the sharper edges available in greyhound betting.

One practical tip: pay attention to the number of races since a dog’s last grade change. A dog that has just been dropped will be running against theoretically weaker opponents for the first time. If its form figures show it was competitive in the higher grade — finishing second or third rather than trailing in last — the drop could represent significant value.

Open Races — Outside the Grading System

Open races throw out the grading playbook entirely. In an open race, there are no grade restrictions. Any dog can be entered, and the trap draw is randomised rather than seeded by running style. The result is the highest quality racing on the UK calendar — and the most unpredictable betting environment.

Open races are typically staged at the bigger tracks on their feature nights: Hove on Thursdays, Monmore on selected evenings, Towcester for its showpiece events. They attract the best dogs from across the country, meaning the fields are deeper in quality than any graded card. The favourite win rate in open races varies significantly by track — in 2024, Central Park recorded above 50 per cent for outright favourites in open events, while Yarmouth was down around 36 per cent.

From a betting perspective, open races require a different mindset. Because the draw is random, the style-to-trap alignment that you rely on in graded racing may not exist. A top-class railer could find itself in trap 5. A stayer with a wide running style might land trap 1. This randomness means that pre-race analysis carries more uncertainty, and the market reflects it — you will often see more even price distributions across the six runners in open races compared to the sharp favourites that emerge in graded fields.

The flip side is that value is more abundant. Bettors who have studied the runners in depth — tracking their performance across multiple tracks, understanding their style preferences, noting their trainer’s recent form — can find prices that don’t reflect the true chance of a well-drawn, in-form dog. Open races reward research more than any other format in greyhound racing.

Grade Changes as Betting Signals

The grade change is the racecard’s most underrated signal. When a dog drops in class, the immediate question is whether it was outclassed at the higher level or simply unlucky. The form figures usually tell you which. A dog that finished third and fourth in A3 before being dropped to A5 was competitive — it just wasn’t winning. Against A5 opposition, that kind of form often translates into a strong winning chance. The market sometimes prices these dogs accordingly, but not always. When the grade drop is fresh and the previous form was close-up, you may be looking at value.

Grade rises tell a different story. A dog promoted after two consecutive wins is entering unfamiliar territory. It has never faced opposition at this level, and its recent times — impressive enough to earn the promotion — may not be fast enough to compete. Promoted dogs fail at a surprisingly high rate, particularly when the jump is more than one sub-grade. Backing a recently promoted dog at short odds requires strong additional evidence: exceptional times, a favourable draw, or a notably weak field at the new grade.

There is also the lateral grade change to consider. Dogs that move between tracks retain their form but may be regraded by the new track’s racing manager, who assesses them based on local standards. A dog graded A4 at a smaller track might find itself slotted into A6 at a larger, more competitive venue — or vice versa. Track transfers are worth monitoring because the regrading is not always perfectly calibrated. A dog entering a new track’s grading system is, for one or two races, something of an unknown quantity at that level, and unknowns create pricing inefficiencies.

Grade Isn’t Destiny — It’s Context

A B3 dog at Monmore is not the same as a B3 dog at Romford. Grading is local, not national. This is one of the most important things to remember when using grades as part of your analysis. Two dogs with identical grade letters and numbers, racing at different tracks, could be separated by several lengths in actual ability. The grade tells you about a dog’s position within a single track’s hierarchy. It says nothing about how that hierarchy compares to another.

The practical consequence is that you should never compare grades across tracks as if they were standardised ratings. Instead, compare times — adjusted for distance and track characteristics — or use published speed ratings from platforms like Timeform, which attempt to normalise performance across venues. Grades are useful for understanding the shape of a race at a specific track on a specific night. They are not useful for ranking dogs nationally.

Used properly, the grading system is one of your most valuable analytical tools. It provides context for every race: what level of competition is the dog facing, has it moved up or down recently, and does its form at the previous grade suggest it will handle the new one. Combined with trap draw, running style, and recent times, grading completes the picture. It tells you not just how a dog has been running, but how hard the races have been. That distinction — between raw performance and the quality of opposition — is what separates informed selections from guesswork.