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Wow, has Yohemy Nolasco pitched well. But the sample size is still too small to get too excited.
Dan Victor (@SlyDanno70/Twitter)

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2024 South Side Sox Top Prospect No. 75: Yohemy Nolasco

There’s incredible promise in his electric right arm

Yohemy Nolasco

Right-Handed Relief Pitcher
6´3´´
160 pounds
Age: 20
2023 SSS Top Prospect Rank 102
2023 High Level Kannapolis (Low-A)
Age relative to high level -2.6 years
SSS rank among all right-handed relief pitchers in the system 9
Overall 2023 stats 2-0 ⚾️ 2 saves ⚾️ 11 games (3 finishes) ⚾️ 24 IP ⚾️ 1.50 ERA ⚾️ 1.458 WHIP ⚾️ 23 K ⚾️ 10 BB

Yohemy Nolasco is a Dominican native who signed with the White Sox on Jan. 9, 2020 — right in the face of the pandemic. Getting his feet finally wet in 2021, in 13 games (seven starts) in the DSL Nolasco posted a 5.32 ERA and 1.48 WHIP by allowing 26 hits (.271 OBA) and nine walks (3.42 BB/9) while fanning 19 (7.23 K/9). While he was sharp in July with a 3.52 ERA and 1.30 WHIP in five outings, he only posted two outings in August, which indicates he may have been injured. September was easily Nolasco’s worst month, as he posted a 6.59 ERA and 1.61 WHIP over six outings.

Just turning 19 and with fewer than 25 professional innings under his belt, Nolasco nonetheless got an aggressive assignment in the ACL in 2022, and faltered in his 34 2⁄3 innings. His walks were at a low number overall (8.4%), but when that is coupled with a 16.9% K-rate, it loses luster.

In 2023, it was a mostly great effort from Nolasco, with some caveats. On the diamond in April-July, the righty was lights-out, moving to the bullpen and finding a real niche. However, Nolasco saw just 11 games and 24 innings, so that success is taken with a grain of salt. Despite aggressive assignments, it would not be a crazy notion for the White Sox to also be protective of him; however, he did not pitch after July 22, and that’s with sporadic use out of the pen to that point. Pretty clearly (although not assuredly), Nolasco was working through an injury of some sort.

Not much is known about Nolasco’s repertoire. His near-47% ground ball rate indicates he may possess a sinker or some other offering that has sinking action. At least in the DSL, he fared far better versus lefties (.194 OBA) than righties (.317), which may indicate he offers a plus changeup. His strikeout total is fairly low, which may be attributed to a fastball with little oomph — not surprising for someone of his size. With his height, he’s a projectable righty who might still add another 4-5 mph on his fastball.

Nolasco’s Baseball Cube player ratings, from best to worst
Durability 70 (-23 from last season)
Walks 67 (+1)
K/BB 45 (+7)
Hittable 28 (+1)
vs. Power 28 (+1)
Strikeouts 19 (+7)

Now, on the face of it, Nolasco looks like a real find, holding his own despite a young age and aggressive assignments. His lack of use, however, means that he’s still a question mark in the system. If healthy, he might even move back into the rotation. But if relieving and healthy, this is a pitcher who could move upward very fast. It’s anyone’s guess, but a healthy Nolasco should start the season back at Kannapolis.


2024 South Side Sox Top 100 White Sox Prospects

75. Yohemy Nolasco, RHRP
76. Ben Norman, LF
77. Josimar Cousín, RHSP
78. Juan Gonzalez, C
79. Chris Lanzilli, LF
80. Alex Speas, RHRP
81. Fraser Ellard, LHRP
82. Garrett Wright, RHRP
83. Duke Ellis, CF
84. Mathias LaCombe, RHRP
85. Godwin Bennett, RF
86. Rikuu Nishida, LF
87. Caden Connor, LF
88. Zach Franklin, RHRP
89. Jeremy González, LHSP
90. Jerry Burke, RHRP
91. Frankeli Arias, LHSP
92. Mikey Kane, 3B
93. Carlton Perkins, RHSP
94. Tyler Neslony, LF
95. Drew Dalquist, RHSP
96. Jason Matthews, SS
97. Jonathan Stiever, RHSP
98. Tommy Sommer, LHSP
99. Daniel González, LHRP
100. Eduardo Herrera, 3B


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