Justin Karn

He’s at the point where the spread is actually too dramatic and the pitches aren’t effectively tunneling

Some contract data for you on this late night

@AKA_WitchDoctor @MotorPreference Bartolo effectively blocked. Lead leg extension is not for everyone though.

😉 Lead leg block is crucial... 👀Not for everyone !!! @MotorPreference #MotorPreferences #baseball #pitching

@JWonCATCHING Likely a heavily pronation bias release which is why the CB is spiked

Later & less pronation on the curveball verses the change.

@nickycos45 @TreadHQ @FranchFrys25 @FlatgroundApp Sweeper lookin nasty brotha!

Nick Cosentino 24 yo FA RHP FB 92-94 (17, 8) SW 83-85 (0,-18) CT 86-88 (-2, -4) CH 86-88 (2, 13) 2025 USPBL 59 IP 56 K .217 BAA All-Star All-League 2nd Team Pitcher of Year Finalist @TreadHQ @FranchFrys25 @FlatgroundApp

WRAPPING UP THE HOLIDAY SEASON WITH SOME HOUSEKEEPING! CHECK OUT THE CHANGING FACES THIS WEEK! #IndyBallReport indyballreport.podbean.com/e/episode-356-…

The Westside Woolly Mammoths of the USPBL are excited to announce the signing of Left Handed Pitcher Gavin Brasosky for the 2026 season. #RealBaseballRealFun #WhosNext

A new era is officially underway in Westside. Justin Karn enters his fifth season in the USPBL and his first full season as Manager of the Westside Woolly Mammoths—and he’s already set the bar high. After taking over late in 2024, Justin led the Mammoths on an incredible 18–2 run to the top playoff seed, powered by one of the most dominant pitching stretches in league history. With a proven track record of success at every level—from NCAA Division I to conference championships and pro player development—Justin brings energy, preparation, and leadership to the dugout. From rewriting record books in college baseball to commanding the Mammoths’ staff, the future in Westside is bright. Mammoths fans, get ready. This is just the beginning.

Meet the Managers for the 2026 @uspbl season! Jim Essian - Utica Unicorns Paul Noce - Birmingham Bloomfield Beavers Ryan Kottke - Eastside Diamond Hoppers Justin Karn - Westside Woolly Mammoths The managers are the pulse of the USPBL. They represent the standard of leadership, respect, professionalism, and mentorship for our players. Their role is vital to the success of the USPBL and everything we are trying to accomplish. The vision and direction of our league is carried out through them daily. I want to thank each one of them for their commitment to the USPBL and their dedication to helping our players achieve their dreams. To read more about our managers, and their accomplishments, visit: uspbl.com/staff/

@AKA_WitchDoctor Also probably a level of diminishing returns w top end bat speed for most players

“More bat speed = better performance.”🤷 🤦But you can swing as fast as you want : if it’s at the wrong time, it means nothing. 🤫 Bat speed without perception and coordination is just wasted energy. 😱 You’re not improving : you’re making windmills. ⚙️💨 🚨 Each athlete must be trained individually: 👉 How they perceive 👉 How they coordinate 👉 How they time their swing 😞Otherwise, you’re only chasing numbers, not performance! #BaseballScience #MotorPreferences #MPE #HittingDevelopment #TimingOverSpeed #baseball

We are heartbroken to share the news of Nick Mangold’s sudden passing.

@TreadAthletics Agreed. Have seen many guys get into a super depth squat like position and then extend or spin out of it and cannot get their pelvis rotating on time and the block is non existent/not timed up

Debunking the hinge? 🧐 The hinge implies a posterior shifting of the pelvis, similar to an RDL in the weight room. My 2 issues with this term: 1) Some players perform better with a more quad/forefoot-driven load (not shifting the hips back first). 2) This load isn't 2D, it's 3D. There's a rotational winding of the back hip in hard throwers, which winds up the back leg spring (glutes & deep hip rotators) so the pelvis can rotate (unload) efficiently. "Rotational hinge" may be a more appropriate descriptor.

Shark checks all the boxes.., Handles velo, ride, sink, spin, all 4 quadrants, rarely expands zone. Simply a winning player and person!

@TreadAthletics @danielpfriel Generally Skenes lower half style is at higher risk but it’s more due to other factors ie how it affects sequencing and timing. Can be on time either way with some work arounds, just a little trickier for very external vertical shin types.

We haven't done this analysis, but should be able to in the next few years. Would be simple to bucket guys that fall firmly into one strategy or the other and look at hip injury incidence. Something to think on, for sure. Hip injuries aren't all that uncommon, but they're not that common either, so it would likely take very large samples to reach a firm conclusion one way or the other.

Pitching Mechanics Mini-Lesson: Skenes vs. Miller 🔥 The primary role of the lower half is to create a stable base & load the pelvis so that it can unload into landing. ✅Skenes represents an effective pelvic-driven, vertical shin strategy. This relies on creating tension via a coil from above. ✅Miller represents a femur-driven strategy. This relies on creating tension via a positive shin angle from below. Both wind the back leg spring into a 3D load. Both clear the pelvis into landing. Styles vary. The principles of high-level lower half mechanics remain the same.

The second half of the @uspbl season brought outstanding pitching performances; 11 shutouts league wide, 8 no hit bids carried into the 6th or later, and a league era of 3.78. Over their final 20 games, the mammoths pitching staff held a 2.21 team era, 1.03 WHIP, and 11.4 K/9.

Congratulations to Anthony Sharkas (@anthonysharkas) for being the 2025 USPBL MVP!

Cam Vieaux pitches a perfect 6-inning game. 18 up and 18 down.

In the last month league wide - 3.98 era, average velocity up .7 mph, ~61% strikes, huge strikeout numbers.

Former USPBL Pitcher Dugan Darnell (@DugDarnell) Called Up to the Major Leagues by Colorado Rockies! Darnell is a Northville, Michigan native who played college baseball at Adrian College. Darnell signed his first professional contract with the USPBL in 2019, where he showcased his electric arm and relentless work ethic.

When the work matches the established environment, good things happen. @ChoyceDiffey, @UTMBase alum, now sits mid-90s, has touched 97, and threw a 5-inning no-hitter in July. Hear how the @USPBL fueled his development this summer below. @USPBLdevelop @JKarn41