Prep Baseball Report

Hattiesburg Open: Pitchers - Data Dive


Colin Chamblin
Manager, Deep South Operations / Area Scout

On June 6th, we hosted the Hattiesburg Open at the University of Southern Miss. This event featured some of the top talent from across the state, and it provided our staff with an in-depth look at some high-follow players into the summer and next spring. 

Inside today’s Pitching Data dive we will highlight the players with top metrics per Trackman. 

Last week, we broke down the stat leaders from the more traditional categories in our statistical leaderboards. Today, we will take an even closer look at the pitchers in attendance with the help of our tech partners, broken down by the categories and leaderboards below.

FASTBALL 

MAX VELOCITY (MPH)

Rank Name State School Class Pos Velocity (max)
1 Gavin Parrow MS Madison Central 2025 SS 86.1 mph
2 Aaron Alston MS Presbyterian Christian 2026 SS 84.5 mph
3 Tyner Flynt MS Presbyterian Christian 2026 OF 82.5 mph
4 Cayden Berryhill MS Pearl 2026 OF 82.2 mph
5 Jackson Meehan MS NORTHWEST RANKIN HIGH SCHOOL 2026 SS 82.2 mph

SPIN RATE (AVG.)

Rank Name State School Class Pos Spin Rate (avg)
1 Stone Kelly MS St. Stanisluas 2027 RHP 2211 rpm
2 Eli Lowe MS Purvis 2024 RHP 2164 rpm
3 Jackson Meehan MS NORTHWEST RANKIN HIGH SCHOOL 2026 SS 2153 rpm
4 Cayden Berryhill MS Pearl 2026 OF 2143 rpm
5 Gavin Parrow MS Madison Central 2025 SS 2139 rpm

Spin Rate: This metric calculates the rate of spin on the baseball as it leaves the pitcher’s hand, measured in revolutions per minute (rpm). Historical data shows that high-spin fastballs lessen the impact of gravity, allowing for more ‘rise’ (or less fall, in other words) as it carries through the zone. Low-spin fastballs typically indicate the pitch has greater horizontal action, often making it tougher to square up, but generally easier to make contact with, leading to more ground balls, while high-spin fastballs show a correlation with swings and misses.

SPIN EFFICIENCY% (AVG.)

Rank Name State School Class Pos Spin Efficiency % (avg)
1 Tre Adcox MS FOREST HIGH SCHOOL 2027 SS 96 %
2 Nash McCrary MS Heritage Academy 2026 RHP 95 %
3 Jett White MS Northwest Rankin 2027 OF 92 %
4 Gavin Parrow MS Madison Central 2025 SS 90 %
5 Keith Forbes MS Brandon 2025 3B 88 %

Spin Efficiency: This metric is the percentage of the raw spin rate that directly impacts pitch movement; so while raw spin is measured by revolutions per minute (rpm), spin efficiency is the ratio of true spin divided by raw spin. It’s important to understand that more is not always better when it comes to spin efficiency. The optimal spin efficiency on a pitch depends on the pitch type and should be understood in the context of a pitcher’s entire arsenal. Regarding the true four-seam fastball, a spin efficiency close to 100 percent is preferable, indicating that nearly all the backspin generated on the ball as it leaves the pitcher’s hand is contributing to the “riding” action the pitch has as it enters and exits the strike zone, making it especially effective in the upper third of the strike zone.

INDUCED VERTICAL BREAK (AVG.)

Rank Name State School Class Pos IVB (avg)
1 Nash McCrary MS Heritage Academy 2026 RHP 18.4 in
2 Gavin Parrow MS Madison Central 2025 SS 18.4 in
3 Carter McCammon MS Resurrection Catholic 2025 3B 16.3 in
4 Jett White MS Northwest Rankin 2027 OF 16.1 in
5 Tyner Flynt MS Presbyterian Christian 2026 OF 15.7 in

Induced Vertical Break: Used in short form as "IVB," this metric is most important on fastballs for creating rise and on curveballs for creating depth – it can also have some use when measuring sliders and cutters as well. Sliders tend to be closer to zero inches while cutters are generally between 5 and 15 inches. Usually fastballs and curveballs with large IVB have higher spin efficiencies as well. Sliders generally have very little (closer to zero) IVB and very low spin efficiency. You could also categorize IVB into spin rate as this is part of the “useful movement” you’re looking for. IVB is also a huge part of the vertical approach angle.

HORIZONTAL MOVEMENT (AVG.)

Rank Name State School Class Pos HM (avg)
1 Jackson Meehan MS NORTHWEST RANKIN HIGH SCHOOL 2026 SS 16.7
2 Jett White MS Northwest Rankin 2027 OF 16.0
3 Nash McCrary MS Heritage Academy 2026 RHP 15.9
4 Micah Coutta MS South Jones 2025 LHP -15.8
5 Tre Adcox MS FOREST HIGH SCHOOL 2027 SS 14.9

Horizontal Break: Outlined on TrackMan’s own website: “... horizontal movement is measured in inches between where the pitch actually crosses the front of home plate side-wise, and where it would have crossed home plate side-wise if had it traveled in a perfectly straight line from release. A positive number means the break was to the right from the pitcher’s perspective, while a negative number means the break was to the left from the pitcher’s perspective.”

STRIKE ZONE RATE%

Rank Name State School Class Pos Zone %
1 Jackson Meehan MS NORTHWEST RANKIN HIGH SCHOOL 2026 SS 100 %
^ Nash McCrary MS Heritage Academy 2026 RHP 100 %
2 Tre Adcox MS FOREST HIGH SCHOOL 2027 SS 66 %
3 Gavin Parrow MS Madison Central 2025 SS 57 %
4 Eli Lowe MS Purvis 2024 RHP 50 %
5 Aaron Alston MS Presbyterian Christian 2026 SS 40 %

Average MLB pitchers throw 62 percent strikes, and better pitchers throw strikes 65 percent of the time, or a ratio of roughly 2:1, strikes to balls.


CURVEBALL

SPIN RATE (AVG.)

Rank Name State School Class Pos Spin Rate (avg)
1 Stone Kelly MS St. Stanisluas 2027 RHP 2310 rpm
2 Aaron Alston MS Presbyterian Christian 2026 SS 2241 rpm
3 Nash McCrary MS Heritage Academy 2026 RHP 2208 rpm
4 Eli Lowe MS Purvis 2024 RHP 1905 rpm
5 Keith Forbes MS Brandon 2025 3B 1899 rpm

INDUCED VERTICAL BREAK (AVG.)

Rank Name State School Class Pos IVB (avg)
1 Keith Forbes MS Brandon 2025 3B -9.6 in
2 Nash McCrary MS Heritage Academy 2026 RHP -8.0 in
3 Aaron Alston MS Presbyterian Christian 2026 SS -7.5 in
4 Cayden Berryhill MS Pearl 2026 OF -6.3 in
5 Stone Kelly MS St. Stanisluas 2027 RHP -5.3 in

HORIZONTAL MOVEMENT (AVG.)

Rank Name State School Class Pos HM (avg)
1 Nash McCrary MS Heritage Academy 2026 RHP -15.2
2 Stone Kelly MS St. Stanisluas 2027 RHP -14.7
3 Keith Forbes MS Brandon 2025 3B -11.3
4 Aaron Alston MS Presbyterian Christian 2026 SS -5.3
5 Cayden Berryhill MS Pearl 2026 OF -0.8

STRIKE ZONE RATE%

Rank Name State School Class Pos Zone %
1 Keith Forbes MS Brandon 2025 3B 100 %
2 Aaron Alston MS Presbyterian Christian 2026 SS 33 %
3 Cayden Berryhill MS Pearl 2026 OF 20 %


SLIDER

SPIN RATE (AVG.)

Rank Name State School Class Pos Spin Rate (avg)
1 Gavin Parrow MS Madison Central 2025 SS 2300
2 Stone Kelly MS St. Stanisluas 2027 RHP 2255
3 Carter McCammon MS Resurrection Catholic 2025 3B 2127
4 Micah Coutta MS South Jones 2025 LHP 2073
5 Dawson Dykes MS Petal 2026 OF 1881

INDUCED VERTICAL BREAK (AVG.)

Rank Name State School Class Pos IVB (avg)
1 Tyner Flynt MS Presbyterian Christian 2026 OF -8.7 in
2 Stone Kelly MS St. Stanisluas 2027 RHP -3.8 in
3 Tre Adcox MS FOREST HIGH SCHOOL 2027 SS 3.3 in
4 Jett White MS Northwest Rankin 2027 OF 3.2 in
5 Micah Coutta MS South Jones 2025 LHP 2.5 in

HORIZONTAL MOVEMENT (AVG.)

Rank Name State School Class Pos HM (avg)
1 Dawson Dykes MS Petal 2026 OF 15.8
2 Tyner Flynt MS Presbyterian Christian 2026 OF 11.6
3 Stone Kelly MS St. Stanisluas 2027 RHP -10.2
4 Micah Coutta MS South Jones 2025 LHP 7.0
5 Carter McCammon MS Resurrection Catholic 2025 3B -5.5

STRIKE ZONE RATE%

Rank Name State School Class Pos Zone %
1 Gavin Parrow MS Madison Central 2025 SS 100 %
^ Stone Kelly MS St. Stanisluas 2027 RHP 100 %
2 Micah Coutta MS South Jones 2025 LHP 66 %
3 Tyner Flynt MS Presbyterian Christian 2026 OF 50 %
^ Jett White MS Northwest Rankin 2027 OF 50 %
4 Carter McCammon MS Resurrection Catholic 2025 3B 33 %


CHANGEUP

SPIN RATE (AVG.)

Rank Name State School Class Pos Spin Rate (avg)
1 Gavin Parrow MS Madison Central 2025 SS 1899 rpm
2 Jett White MS Northwest Rankin 2027 OF 1700 rpm
3 Jackson Meehan MS NORTHWEST RANKIN HIGH SCHOOL 2026 SS 1675 rpm
4 Nash McCrary MS Heritage Academy 2026 RHP 1631 rpm
5 Carter McCammon MS Resurrection Catholic 2025 3B 1619 rpm

HORIZONTAL MOVEMENT (AVG.)

Rank Name State School Class Pos HM (avg)
1 Tre Adcox MS FOREST HIGH SCHOOL 2027 SS 19.5
2 Nash McCrary MS Heritage Academy 2026 RHP 17.8
3 Micah Coutta MS South Jones 2025 LHP -17.1
4 Gavin Parrow MS Madison Central 2025 SS 15.8
5 Keith Forbes MS Brandon 2025 3B 14.3

STRIKE ZONE RATE%

Rank Name State School Class Pos Zone %
1 Gavin Parrow MS Madison Central 2025 SS 66 %
2 Dawson Dykes MS Petal 2026 OF 50 %
3 Keith Forbes MS Brandon 2025 3B 33 %
^ Tyner Flynt MS Presbyterian Christian 2026 OF 33 %

+ CLICK HERE for a look at the complete statistics from the event.


 

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