Manager Westside Woolly Mammoths @USPBL
Joined September 2011
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Can’t say enough about Tommy. Line to line juice, pro at bats, handles every type of pitch, high baseball IQ, one of the best guys you’ll ever meet. Former draft pick
A true competitor with + pitchability. Cut ride heater and + sweeper. Always on the attack and in control of the game. Great in the clubhouse too.
Huge thank you to @JKarn41 and @JustinOrenduff for the opportunity to compete for a second season in the @uspbl.
2026 Accolades:
1st Team All USPBL
Pitcher of the Year Finalist
Led qualified pitchers in K/9, second in league in ERA, WHIP, BB/9
Mid-Season All Star
Justin Karn retweeted
.@USABaseball’s 2025 Developmental Coach of the Year and three-time Team USA coach, Casey Scott 🫡
#ForGlory🇺🇸
Justin Karn retweeted
@BlueCrabs reliever Rafi Vazquez started the 2026 @AtlanticLg season with a franchise-record 24.0 consecutive scoreless innings.
He almost never pursued a career in professional baseball.
Learn more about the phenomenal right-hander here: bluecrabsbaseball.com/news/r…
Justin Karn retweeted
When Pittsburgh Pirates ace Paul Skenes showed up unannounced at a local Little League field, most kids didn't believe it was really him. Hours later, they were playing catch, taking photos and making memories with one of baseball's biggest stars.
Much deserved for Z
🚨Iona University is proud to introduce Al Zoccolillo Park.🚨
A tribute to Coach Z's remarkable impact on Iona Baseball, his players, and the generations of Gaels who followed.
⚾ Winningest coach in program history
⚾ Mentor, leader, and teacher
⚾ Forever part of Iona Baseball
READ MORE: ionagaels.com/news/2026/6/5/…
#GaelNation
@ionauniversity · @maacsports · @IonaBaseball
Justin Karn retweeted
April 17 Transaction: @canaries signed OF Anthony Sharkas (@anthonysharkas).
The @emu_baseball and @mucrusadersbsb alum previously played in the @uspbl.
Choyce willed himself into this opportunity. He would be the first to tell you he needed to get better to have a chance, and he fully committed to doing so.
Below is a portion of @MattCripsey mid season write up on Choyce’s in game velo progression. The full thread is below
Congrats to longtime Tread athlete @ChoyceDiffey on signing with the @whitesox 🧦
The 23-year-old is coming off his first pro season, where he was an All-Star in the USPBL (and ran it up to 97). 🔥
Coach: @imstilllucas
22 years old, explosive arm, D1 experience.
At UT-Martin: 9.22 ERA, 67.1 IP, 51 BB, 14 HBP. Sat low 90s, touched mid-90s.
The upside was real, he just needed a plan.
That’s where the USPBL came in (1/🧵)
@ChoyceDiffey @JKarn41 @USPBLdevelop
Justin Karn retweeted
So proud of @ChoyceDiffey. Absolute grinder. Made some big strides this past season. Another one moves on from the USPBL!
Shoutout to @JKarn41, and congrats to the team at Tread and @imstilllucas as well
Congrats to longtime Tread athlete @ChoyceDiffey on signing with the @whitesox 🧦
The 23-year-old is coming off his first pro season, where he was an All-Star in the USPBL (and ran it up to 97). 🔥
Coach: @imstilllucas
Justin Karn retweeted
.@OaklandBSB and their shortstop Kyle Revere got the better of Michigan State and Revere’s high school teammate Noah Bright, who started this game behind the plate
“Rev” (Madonna transfer) is 7-11, with 4 RBI, and 2 runs against the in-state Big Ten foes
He’s at the point where the spread is actually too dramatic and the pitches aren’t effectively tunneling
Justin Karn retweeted
WRAPPING UP THE HOLIDAY SEASON WITH SOME HOUSEKEEPING! CHECK OUT THE CHANGING FACES THIS WEEK! #IndyBallReport
indyballreport.podbean.com/e…
Justin Karn retweeted
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
Justin Karn retweeted
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.
Justin Karn retweeted
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/
Shark checks all the boxes.., Handles velo, ride, sink, spin, all 4 quadrants, rarely expands zone. Simply a winning player and person!
Looking for professional opportunities
2025 USPBL MVP
2025 USPBL Batting Title
.372 BA / .452 OBP / .517 SLG
54 hits in 39 games played
20 Stolen Bases
6’2” 200lbs
OF
@JKarn41 @T_Gelly @TJHannam10