The 6f Betway Heritage Handicap at Newmarket on Thursday looks one of the most competitive three-year-old sprint handicaps of the summer, with a blend of progressive improvers, Royal Ascot form horses and proven big-field performers all converging on the July Course.

At the head of the market sits Thunder Call, who arrives with arguably the strongest recent piece of form in the race. William Haggas’s colt looked a rapidly improving sprinter when winning a 22-runner handicap at York in June, travelling strongly before asserting late. A 6lb rise appears manageable and there is a strong case that the stiffer finish at Newmarket could unlock further improvement from a horse who has raced only four times.

Closely matched on that York form is Red Spells Danger, who chased Thunder Call home after another notable step forward. Tim Easterby’s gelding has transformed since being dropped to 6f and his profile remains that of a horse still learning his craft. At the likely prices, he may offer the most appealing value proposition among the market principals.

The solid benchmark is Ten Carat Harry, whose consistency has been one of the stories of the season. After dominating on the all-weather through the winter, he has carried that progression onto turf, winning over Newmarket’s Rowley Mile course before finishing a strong third in the ultra-competitive Palace of Holyroodhouse Handicap at Royal Ascot. While he may not possess the same scope for improvement as some rivals, he brings rock-solid credentials and a proven ability to perform in major handicaps.

Among the dangers, Calico Blue deserves respect after finishing fourth in the Royal Ascot sprint handicap. The return to 6f looks a positive and Roger Varian’s colt has already shown he belongs at this level. Man Of Vision is another capable of bouncing back. His York run can be forgiven given the sharper nature of that track, and his earlier Newmarket second behind Ten Carat Harry remains strong form.

Several runners bring significant upside. Sea Cookie arrives unbeaten this season after making a successful handicap debut over course and distance. A 5lb rise demands more, but his profile suggests further progress is entirely possible. Starmade, meanwhile, shaped better than the bare result when finishing fifth at Royal Ascot and could be well suited by a strongly-run 6f.

The likely pace scenario adds another layer of intrigue. Front-runner Pilu is expected to ensure a genuine gallop, with Ten Carat Harry and Thunder Call also likely to race prominently. Such a setup should favour horses capable of settling and finishing strongly, potentially playing into the hands of Thunder Call, Red Spells Danger and Man Of Vision.

As is often the case in Newmarket’s major sprint handicaps, small margins may decide the outcome. Thunder Call earns the narrow vote as the horse with the strongest blend of current ability and untapped potential, but Red Spells Danger looks a major threat and arguably the value alternative. Ten Carat Harry’s consistency ensures he commands respect, while Sea Cookie and Man Of Vision head the list of potential improvers capable of upsetting the established order.

Predicted 1-2-3

1. Thunder Call
2. Red Spells Danger
3. Ten Carat Harry

Best Value Bet

Red Spells Danger

Most Dangerous Improver

Sea Cookie

Race Verdict

A high-quality three-year-old handicap in which the York form may prove key. Thunder Call is the most likely winner, but Red Spells Danger appeals as the standout value play in a race packed with depth and improving sprinters.