Sophistication aside, hackers will eventually find ways to get through imposed barriers. The more complex the barriers, the more articulate the hacker, and there’s always a solution to getting past obstacles for those with creativity and technical capacity.
Coaches share similarities, especially when it comes to deciphering skill and tactics, breaking through systems and adapting to an evolving landscape. They hack existing ideas to exploit weaknesses and penetrable holes.
Early analytics shot generation research concluded that controlled zone entries were more favourable to generating shots on goal, equating dump-ins to giving up possession. Carry-ins and passes were better options than chip and chases.
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After being universally disparaged as undesirable, dump-in plays are back. Coaches have adapted and are cleverly integrating dump-ins strategically.
Dump in rates are on the rise
The Point Hockey’s Mike Kelly recently documented dump-in trends being on the rise, demonstrating the effects using the New York Islanders as a case study. Kelly, with access to a vast set proprietary data from Sportslogiq illustrated the growing trend of dump in plays since the 2017-18 season.
According to Kelly’s research, dump-in plays accounted for 49.8% of entries in 2017-18, with a small rise to 50.6% in 2018-19 and 53.5% in 2019-20 at the time of the article’s publishing.
Available data in the public sphere is limited, currently only amassed by Corey Sznajder on a mass scale, available to the public for Patreon subscribers. Sznajder doesn’t have the same dimensional capabilities of a Sportslogiq, but does have enough tracked games since 2017-18 to validate Kelly’s proprietary data, until this current season where the small sample size prohibits a conclusive trend of dump-ins being on the rise. It does confirm on a small scale that the trend of dump in plays are still relevant, just not matching the bigger sample from Sportslogiq.
Sznajder made it a point to indicate that even though goals per carry or dump-in have both increased, the ratio of shots/goals to carries continues to supersede dump-ins. Controlled entries are still desirable, but not the only option.
Yeah, the overall goals per carry/dump-in rate increased on both sides but the ratio was still the same. (Carries leading to twice as many shots & goals). The big difference was adding passing plays.
— Corey Sznajder (@ShutdownLine) December 3, 2019
So what is driving the dump-in renaissance, and can coaches benefit? Incentive to gain the zone with control boost shot metrics and playmaking potential. However, forcing neutral zone regroups in the absence of a controlled entry opportunity eliminates a strategic option, while increasing turnover risk.