Category Archives: Batted Ball Speed

Testing the Axe Bat’s claims

Collaboration with Jeff Long and Dan Kopitzke

To date Baden Sports, the parent company of Axe Bat, says it has backed up these claims through ergonomic and biomechanical research. The most extensive study on their product, completed by a team at UCLA, exemplifies much of their support for these claims. You can read the results of that study as it applies to the claims above on their website here, and you can also read more details from the full study here.

We wanted to take it a step further though, performing an independent study in a real world setting. Specifically, we wanted to look at whether the Axe Bat stood up to the performance claims that they make.

Read the rest on Baseball Prospectus (my first article there!)

Reactions

Advertisements

Combining Technologies to Measure Swing Development

As hitters develop, their mechanics evolve over time into a swing that both shares many commonalities with other players and is unique to their own game. But tracking a player’s progress on that journey to a consistent swing has always been tricky. Scouting and video analysis can give players a sense of how repeatable their mechanics are, but these are expensive, time-consuming, and limited to players at the highest level, whom we would expect to already have the most consistent mechanics.

Enter technology. Technological developments, including inertial bat sensors and camera-based ball tracking systems, should make it possible to develop a quantitative measure of consistency readily available to a wider range of players, with a wider range of abilities. This will allow young hitters to better measure their progress while also giving scouts and coaches a tool to judge prospective players.

In this article, we look for a way to quantify that relationship between consistency and hitter quality. We measured over 1,500 individual swings from 25 hitters, ranging in age from Little Leaguers to NCAA Division 1 players. We also collected different kinds of swings from each hitter, having each player hit off a tee and a pitching machine, with the goal of hitting first for power and later for contact.

Read the rest in The Hardball Times Baseball Annual 2016

(Collaboration with Dan Kopitzke, K-Zone Academy, Apex, NC)

Scoutee pairs handheld radar gun with smartphone app

With no statistics available from his national team days, and no video or scouting reports available to him, Uhan couldn’t make an impression on his would-be college coaches. He ended up attending the University of Ljubjana in the Slovenian capital, and his baseball career ended. As a lecturer in the school’s faculty of economics, Uhan was bitten by the entrepreneurial bug and found inspiration in his former passion. He soon after partnered with fellow faculty members who specialized in electrical engineering (especially radar systems), and they began developing what would become Scoutee.

Read the rest on TechGraphs

Reactions

SmartKage helps scouts, teams evaluate players

“It’s analogous to a physical SAT,” Scannell says. “And if you take it multiple times, just like the SAT, we combine your best scores in each area. It’s not about consistency, it’s about capability.

Once the explanation is over, a few taps on a touch screen start the automated measurement process. The system has been designed to be completely automated. Aside from tapping “next” on the touch screen, no human intervention is required, though Scannell adds the occasional explanatory detail or words of encouragement.

Read the rest at TechGraphs

Do hard-hit balls produce more errors?

…And whereas the home team’s fielding percentage decreases on harder-hit balls, the road team stays oddly consistent — and relatively error-free! — over the meaty part of the curve.

These data suggest home teams get the benefit of the doubt on would-be errors: a ground ball hit at the same speed is more likely to be called an error if the home team is fielding than if it is batting. If the relationship were flipped, you could argue that some of it was due to the visitors’ inexperience with the nuances of an individual ballpark. But it seems unreasonable to argue that visiting defenders get more reliable away from their home grounds. Besides, scorers are incentivized to turn close calls for home batters into hits (to boost batting averages), and close calls for visiting batters into errors (to help keep down ERAs).

Read the rest at Beyond the Box Score

Reactions