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Jonathan Mack

Jonathan Mack LHP/1B

  • Lexington, MA
  • Belmont Hill School
  • Grad 2023
  • Ht 6'4''
  • Wt 208 lbs
  • Throws Left
  • Bats Left
  • Arm 85 mph
  • 60 YD 7.16 Sec
  • Class 4

Running

  • 1.78 sec 10 Yds
  • 4.95 sec 40 Yds
  • 7.16 sec 60 Yds
  • N/A sec H > 1B
  • 4.80 sec Shuttle (L)
  • 4.55 sec Shuttle (R)

Strength

  • 9'0'' Broad Jump
  • 6'3'' Lateral Jump (L)
  • 7'4'' Lateral Jump (R)
  • 101 psi Grip (L)
  • 118 psi Grip (R)

Throwing

  • 85 mph mph Velocity
  • 50 Arm Grade

Position - 1B

  • 48 Fielding Grade

Hitting

  • 48 Hitting Grade (L)
  • 50 Power Grade (L)
  • 89 mph mph Exit Velocity

Pitching

  • Low 3/4 Arm Angle
  • 48 Arm Action Grade
  • 50 Control Grade
  • 45 Delivery Grade
  • 80 – 80 mph FASTBALL
  • 45 FB Grade
  • 65 – 66 mph CURVEBALL
  • 52 CB Grade
  • 72 – 74 mph CHANGEUP
  • 50 CH Grade
  • 71 – 71 mph SLIDER
  • 45 SL Grade

ADVANCED SWING METRICS BY SWINGTRACKER

Official Scouting Report

  • 4Class Rating
  • LHP/1BPosition Projection

09/28/2022 - Arizona Senior Fall Classic (2023) Jonathan is a 2023 LHP/1B who showcased his skills during the Arizona Fall Classic. At 1B, Jonathan worked to center the baseball and presents a big target at first base. He tries to create good fielding angles and tracks ball to glove. He throws from a low 3/4 arm slot to second base with an arm velocity up to 85mph. At the plate, he hits from an athletic and even stance with high hand set. He activates his hands and gets extended through the hitting zone with a good barrel path. A flat barrel path enables him to hit balls to all fields with a with a bat exit velocity up to 85mph during BP. During the games, he had a single and 2 base on balls. A left-handed pitcher he works exclusively from the stretch. He throws from a low 3/4 arm slot and has some deception to his delivery. A 4-pitch pitcher who mixes his pitches and has good command. He attacks hitters with a FB that topped out at 80mph, a 1/7 shaped breaking ball, a 2/8 shaped slider, and a changeup with good sinking action that he throws with FB arm speed. In 4 innings of work, he didn't allow a hit and punched out 2 hitters. Jonathan is a 2-way player who has the potential to further build upon his skills on the field.

01/23/2022 - All-In Membership - North Branford, CT Jonathan is a cant miss 1B/LHP prospect on the 2023 class. He has an outstanding frame (64/208) with room to grow. At 1B, he has advanced awareness and works well around the bag. He presents his glove well and is capable of making all the routine plays. He can redirect the baseball with fluid transfers and loose arm actions. Once he becomes comfortable on adjusting his footwork based upon the hop, he has the potential to become an elite defender. On the mound, he has a clean repeatable delivery with outstanding backside hip load and arm action. He works downhill and can pound the zone. He operates with a 3-pitch mix. His FB topped at 80 with arm side run. His CB sat 65-66 with 1/7 shape and depth. His CH sat 72-74. Once he establishes his natural fastball arm speed on his CH, he will be able to add more deception to the pitch. At the plate, Johathan can generate power (89 exit velo). He has above average bat speed and a direct path to the baseball with pull side power. Shows solid balance by staying centered in his swing. Widening his base may assist with his timing and rhythm to unlock power to the backside gap. Overall, Johnathan is an above average two-way prospect that is only scratching the surface of becoming major force on the diamond.

Profile

Jonathan Mack Lexington, MA info@factoryathletics.com 800-641-4487 @baseballfactory
Primary Position LHP
Grad Year 2023 Secondary Position 1B
High School Belmont Hill School Bats Left
Height 6'4'' Throws Left
Weight 208 LBS Arm 85 mph
60 YD 7.16

The chart below shows the levels of college baseball, along with the range of players with potential to be recruited at that level.

Division I Class 1 – 4
Division II Class 1 – 5
Division III Class 1 – 8
NAIA Class 1 – 6
JUCO Class 1 – 8

Tool Grade Scale

Our main goals with the BF "10-70" Scouting Scale are to provide the player with a realistic evaluation of his "PRESENT" abilities (what he can do today), and to provide college coaches with information they can use to identify and/or compare potential recruits.

Tools are graded for all players and pitchers, regardless of age or graduation year. However, for High School players we use only grades 20-70 (grades 10-18 do not apply), while for Middle School players we use only grades 10-52 (grades 55-70 do not apply).

Grade Middle School (Ages 11-13) Description High School (Ages 14-18) Description 10 Yard Dash (seconds) 40 Yard Dash (seconds) 60 Yard Dash (seconds) Home-1B LHH (seconds) Home-1B RHH (seconds) 5-10-5Shuttle [LEFT] (seconds) 5-10-5Shuttle [RIGHT] (seconds) Broad Jump (inches) Lateral Broad [LEFT] (inches) Lateral Broad [RIGHT] (inches) Grip Strength [LEFT] (psi) Grip Strength [RIGHT] (psi) FB & Raw Velocity (mph) Bat Exit Velocity (mph) Catcher Release (seconds)
10 Poor -----N/A----- 2.50+ 7.50+ 10.50+ 6.70+ 6.80+ 6.80+ 6.80+ 35- 35- 35- 30- 30- 40- 30- 3.70+
12 Well Below Avg -----N/A----- 2.40 7.40 10.00 6.40 6.50 6.60 6.60 40 38 38 35 35 42 35 3.50
15   -----N/A----- 2.35 7.30 9.75 6.10 6.20 6.40 6.40 45 42 42 40 40 45 38 3.25
18 Below Avg -----N/A----- 2.30 7.20 9.50 6.00 6.10 6.20 6.20 50 46 46 45 45 48 40 3.15
20   Poor 2.25 7.00 9.25 5.90 6.00 6.00 6.00 55 50 50 50 50 51 45 3.10
22 Near Avg   2.15 6.50 9.00 5.80 5.90 5.85 5.85 60 54 54 55 55 54 50 3.00
25   Well Below Avg 2.10 6.25 8.75 5.70 5.80 5.75 5.75 64 58 58 60 60 58 55 2.90
28 MS Average   2.05 6.15 8.50 5.45 5.55 5.50 5.50 68 62 62 65 65 62 60 2.80
30   Below Avg 2.00 5.95 8.25 5.40 5.50 5.25 5.25 74 64 64 70 70 63 62 2.70
32 Solid Avg   1.95 5.80 8.00 5.20 5.30 5.10 5.10 78 68 68 80 80 67 65 2.60
35   Near Avg 1.90 5.65 7.75 4.90 5.00 5.00 5.00 82 72 72 90 90 71 70 2.50
38 Above Avg   1.88 5.45 7.50 4.80 4.90 4.95 4.95 86 74 74 100 100 75 75 2.40
40   HS Average 1.85 5.25 7.40 4.70 4.80 4.90 4.90 93 76 76 110 112 79 80 2.25
42 Well Above Avg   1.82 5.20 7.30 4.60 4.70 4.80 4.80 98 80 80 115 115 81 82 2.15
45   Solid Avg 1.80 5.18 7.20 4.50 4.60 4.70 4.70 103 84 84 118 118 83 84 2.10
48 Excellent   1.78 5.16 7.10 4.45 4.55 4.60 4.60 108 88 88 120 120 85 86 2.05
50   Above Avg 1.76 5.14 7.05 4.40 4.50 4.50 4.50 113 92 92 125 125 86 88 2.00
52 Outstanding   1.74 5.12 7.00 4.35 4.45 4.40 4.40 118 96 96 128 128 87 90 1.98
55 -----N/A----- Well Above Avg 1.72 5.10 6.95 4.30 4.40 4.30 4.30 123 100 100 130 130 88 92 1.95
58 -----N/A-----   1.70 5.05 6.90 4.25 4.35 4.25 4.25 128 104 104 135 135 89 94 1.93
60 -----N/A----- Excellent 1.68 5.00 6.85 4.20 4.30 4.20 4.20 133 106 106 138 138 90 95 1.90
62 -----N/A-----   1.66 4.95 6.80 4.15 4.25 4.15 4.15 138 108 108 140 140 91 96 1.88
65 -----N/A----- Outstanding 1.64 4.90 6.70 4.10 4.20 4.10 4.10 143 110 110 145 145 93 97 1.85
68 -----N/A-----   1.62 4.85 6.60 4.05 4.15 4.05 4.05 148 112 112 150 150 94 98 1.82
70 -----N/A----- Superior 1.60- 4.80- 6.50- 4.00- 4.10- 4.00- 4.00- 150+ 115+ 115+ 155+ 155+ 95+ 99+ 1.80-
Please Note: We only use information gathered at Baseball Factory and Team One events and/or by Baseball Factory and Team One staff on our scouting reports. This allows us to maintain the integrity of our reports by publishing only what we see.

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