2025 South Side Sox Top Prospect No. 27: William Bergolla

Already an effective player, this infielder could become an asset for the South Siders

Wiliam Bergolla
Second Baseman
5´9´´
165 pounds
Age: 20
First appearance among the South Side Sox Top 100 prospects
2024 High Level Winston-Salem (High-A)
Age relative to high level -3.1 years
SSS rank among all second baseman in the system 1
Overall 2024 stats 89 games ⚾️ 1 HR ⚾️ 40 RBI ⚾️ .300/.359/.381 ⚾️ 29 BB ⚾️ 38 K ⚾️ 27-of-33 (81.8%) CS ⚾️ .985 FLD% ⚾️ 2.3 Simple WAR

At just 17 years old, middle-infielder William Bergolla was signed by the Philadelphia Phillies, following in his father’s footsteps as he attempted to make it to the major leagues. He made a great first impression upon joining the Phillies DSL team in 2022, batting .380 with an .893 OPS in his first 24 games. He then spent time in Philadelphia’s Low- and High-A levels in 2023 and 2024, respectively, before he was traded to the Chicago White Sox last July in exchange for the southpaw reliever, Tanner Banks.

Bergolla’s 2023 season wasn’t as strong offensively, posting a significantly lower OPS (.693) and BA (.255) in 55 games, however, he struck out at an extremely low rate (7.5%), and average 1.76 walks per strikeouts (a 13.2% BB%). Bergolla’s strikeout and walk rates nearly flip-flopped into 2024, but his offensive production was much more efficient in 67 games for High-A Phillies affiliate the Jersey Shore BlueClaws. Prior to being traded to the Sox, Bergolla racked up 69 hits and slashed .295/.350/.385 — so while he wasn’t blasting extra-base hits, he was consistently getting on base.

William was just as good as he transitioned to the Dash in early August, and in 22 games there he ended up with a .755 OPS while batting .316 with a 121 wRC+. He struck out at a fairly low rate once again — just eight times in his 76 PAs at a 8.9% K% — and still averaged (albeit very slightly) more walks per strikeouts. The great news is that he is still very young at just 20 years old, so he has plenty of time to refine his game and become an even more effective piece of the offense.

The other thing that makes Bergolla a weapon is his ability to steal bases. Last season he stole 18 in 67 games with the Phillies organization, and banked half of those (nine) with the Dash in just 22 games to close out the season. He was safe 81% of the time, well above average and past the bar that makes base-stealing worthwhile in run production.

On the defensive end, Bergolla has been solid all around. He played the majority of his 2024 games with the BlueClaws at second base and made just three errors in 458 innings and 187 chances. Second base seems to be his stronger position, as he tends to have the highest FLD% there across pretty much every level he has played thus far, so naturally Bergolla mostly played shortstop for Winston-Salem. At short, he blundered two balls in 67% fewer chances than before he was traded. He has plenty of time to evolve in both positions, and I’d expect him to get some more time experimenting around the infield as he matures as a player — potentially landing at second down the line.

Bergolla’s Baseball Cube player ratings
Contact 99
Hitting 84
RBIs 55
Durability 50
Speed 49
Runs 47
Power 9
XBH 8
Average 50.13

While hitting for power is clearly not currently his strong suit, Bergolla has increased the amount of extra-base hits each season, and posted 18 in 2024 — 12 more than his previous season. In any event, he covers off in that area with his ability to make contact and get on base at a high level. William has plenty of time to develop into a more well-rounded player, but he is on a great path right now.

We can probably expect to see him start the year with a return to Winston-Salem, with the potential getting to Double-A Birmingham at his rate of growth and consistency.

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2025 South Side Sox Top 100 White Sox Prospects
27. William Bergolla, 2B
28. Samuel Zavala, CF
29. Peyton Pallette, RHRP
30. Jake Eder, LHSP
31. Juan Carela, RHSP
32. Javier Mogollón, SS
33. Nick McLain, RF
34. Ronny Hernandez, C
35. Casey Saucke, RF
36. Eric Adler, RHRP
37. Rikuu Nishida, 2B
38. Shane Smith, RHSP
39. Tim Elko, 1B
40. Zach DeLoach, LF
41. Riley Gowens, RHSP
42. Prelander Berroa, RHRP
43. Sam Antonacci, 2B
44. Adisyn Coffey, RHRP
45. Jarold Rosado, RHRP
46. Ryan Galanie, 1B
47. Trey McGough, LHRP
48. Ricardo Brizuela, RHSP
49. Lucas Gordon, LHSP
50. Aaron Combs, RHRP (traded to Phillies on January 1)
51. DJ Gladney, RF
52. Abraham Núñez, CF
53. Andre Lipcius, 1B
54. Shawn Goosenberg, 1B
55. Caden Connor, 1B
56. Mario Camilletti, 2B
57. Jake Peppers, RHSP
58. Ryan Burrowes, SS
59. Garrett Schoenle, LHRP
60. Jackson Appel, C
61. Tommy Vail, LHSP
62. Bryce Collins, RHRP
63. Tanner McDougal, RHSP
64. Stiven Flores, C
65. T.J. McCants, CF
66. Gil Luna, LHRP
67. Fraser Ellard, LHRP
68. Zach Franklin, RHRP
69. Drew Dalquist, RHRP
70. Nick Altermatt, RHRP
71. Carson Jacobs, RHRP
72. Alec Makarewicz, 1B
73. Jacob Burke, CF
74. Calvin Harris, C
75. Terrell Tatum, CF
76. Phil Fox, RHRP
77. Reudis Diaz, RHSP
78. Jurdrick Profar, SS
79. Drew McDaniel, RHSP
80. Michael Turner, C
81. Caleb Freeman, RHRP
82. Braden Shewmake, SS (designated for assignment on January 1, claimed by Royals)
83. Connor McCullough, RHSP
84. Shane Murphy, LHSP
85. Mikey Kane, 1B
86. Daniel González, LHRP
87. Wes Kath, 3B
88. Pierce George, RHRP
89. Tristan Stivors, RHRP
90. Anthony Hoopii-Tuionetoa, RHRP
91. Chase Plymell, RHRP
92. Eddie Park, CF
93. Loidel Chapelli, 2B
94. Adam Hackenberg, C
95. Adrian Gil, 1B
96. Jared Kelley, RHRP
97. Lyle Miller-Green, 1B
98. Marcelo Alcala, RF
99. Drake Logan, LF
100. Cole McConnell, CF