South Suburban Open: Takeaways & Statistical Analysis


By: Peter Hamot
Area Scout, Staff Writer

On Tuesday, June 21, the PBR Illinois staff hosted the South Suburban Open at Ozinga Field in Crestwood, IL. The event featured 19 players from around the state and allowed a number of prospects to pop in front of our staff.

Today, we'll look at the traditional stats leaders gathered by our staff inside this statistical analysis, as well as a few select players that stood out, found below. 

One of the biggest winners from Tuesday's event was Vinnie Marvucic (Niles North, 2023). The left-handed hitter led the event in exit velocity, distance and hard-hit % - while also recording the top velocity from the outfield. Standing at a physical 5-foot-11, 185-pounds, Marvucic displayed a knack for the barrel with elevated contact to his pull-side - while also showing barrel control to take the ball up the middle and to the opposite field on a line. With reliable hands in the outfield, an arm that can reach up to 80 mph and his proven ability to hit, Marvucic is a name to know for coaches at the next level. 

Sticking with the offensive winners, Michael Roberson III (Providence Catholic, 2024) was another name that stood out to our scouting staff. The high-waisted, 6-foot, 170-pound, right-handed hitter boasts all sorts of upside, both in his frame and to his game. His long/loose levers at the plate allowed him to create easy bat-speed with extension through the zone, repeating and controlling his limbs well while consistently finding the barrel to put the ball on a line. Though the power numbers might not be off the charts quite yet, it would be no surprise to see Roberson take significant strides as he starts to fill out his wiry and projectable frame. Defensively, Roberson took reps both at first-base and behind the plate, showing well in both spots. His hands work softly at both positions with athletic actions and fluid footwork, also pairing with his strong arm (T82 from INF, T78 from C), not to mention he led the event with a 2.02 pop-time. 

SS/RHP Morgan Kosmos (Tinley Park, 2024) was a standout two-way prospect from Tuesday's event, showing legitimate potential on both sides of the ball. Standing 5-foot-5, 150-pounds, it would be foolish to write Kosmos off for his size because his game easily makes up for it. On the mound, the right-hander ran his fastball up to 83.3 mph with some eye-popping IVB (T34.9) while averaging 20.3 IVB throughout his 'pen. His fastball played with noteworthy horizontal movement, maxing out at 18 inches and averaging 13.4 inches. Kosmos also showed the ability to handle the bat, taking a quality round of BP and putting the ball on a line consistently from the right side with his short/quick swing. 

RHP Jaryd Vence (Hampshire, 2024) stood out on the mound from the event. Standing 5-foot-10, 165-pounds, Vence has room to add on some strength in the coming years to his projectable build. The right-hander's arm plays with a clean arm circle into a 3/4 slot, moving with a fluid pace down the mound repeatedly. His fastball was the hardest in attendance, topping out at 84.4 mph and pairing with a tight 20/4 slider, 67-68 mph. 

Top 60-times

Rank Name State School Class Pos 60-yard
1 Nick Randell IL Hampshire 2024 OF 6.71
2 Jake Trezise IL Lincoln-Way East 2025 OF 7.28
3 AJ (Anthony) Marchetti IL Wheeling 2023 C 7.30

max fastball velocity

Rank Name State School Class Pos Max FB
1 Jaryd Vence IL Hampshire 2024 RHP 84 mph
2 Morgan Kosmos IL Tinley Park 2024 SS 83 mph
3 William Glenn IL Barrington 2023 RHP 82 mph

avg fastball ivb 

Rank Name State School Class Pos IVB (avg)
1 Sean Doyle IL Andrew 2025 RHP 20.8 in
2 Morgan Kosmos IL Tinley Park 2024 SS 20.3 in
3 Aidan McGovern IL Mount Carmel 2025 1B 18.1 in

max exit velocity

Rank Name State School Class Pos Exit Velocity (max)
1 Vinnie Marvucic IL Niles North 2023 OF 94.9 mph
2 Jaden Franckowiak IL Andrew 2024 1B 93.0 mph
3 Nick Randell IL Hampshire 2024 OF 92.9 mph
4 AJ (Anthony) Marchetti IL Wheeling 2023 C 91.3 mph
5 Jack Hughes IL Evergreen Park 2024 3B 88.2 mph

max distance

Rank Name State School Class Pos Distance (max)
1 Vinnie Marvucic IL Niles North 2023 OF 359 ft
2 Jaden Franckowiak IL Andrew 2024 1B 353 ft
3 AJ (Anthony) Marchetti IL Wheeling 2023 C 352 ft

max bat speed

Rank Name State School Class Pos Hand Speed (max)
1 AJ (Anthony) Marchetti IL Wheeling 2023 C 25.0 mph
2 Jake Trezise IL Lincoln-Way East 2025 OF 24.6 mph
3 Morgan Kosmos IL Tinley Park 2024 SS 23.7 mph
4 Vinnie Marvucic IL Niles North 2023 OF 23.4 mph
^ Nick Randell IL Hampshire 2024 OF 23.4 mph

top infield velocity 

Rank Name State School Class Pos INF Velo
1 Morgan Kosmos IL Tinley Park 2024 SS 84
2 Michael Roberson III IL Providence Catholic 2024 C 82
3 Michael O'Connor IL Bishop McNamara 2023 RHP 73

top outfield velocity

Rank Name State School Class Pos OF Velo
1 Vinnie Marvucic IL Niles North 2023 OF 80
2 AJ (Anthony) Marchetti IL Wheeling 2023 C 79
3 William Merz IL Hinsdale Central 2024 RHP 77

top catcher velocity

Rank Name State School Class Pos C Velo
1 Michael Roberson III IL Providence Catholic 2024 C 78
2 AJ (Anthony) Marchetti IL Wheeling 2023 C 74

top pop-times

Rank Name State School Class Pos Pop Time
1 Michael Roberson III IL Providence Catholic 2024 C 2.02-2.14
2 AJ (Anthony) Marchetti IL Wheeling 2023 C 2.03-2.14
3 Jake Stachelski IL Thornton Fractional South 2024 C 2.07-2.14

For a complete look at each of the statistics measured at this showcase, CLICK HERE.

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