• An optic yellow ProNine 52 YSC slowpitch softball with the USA Softball stamp
  • Cross-section of a softball showing its solid polyurethane center

ProNine 52 YSC USA Slowpitch Softballs - 12 Inch - Dozen

$74.95
$74.95 $84.95
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P15-52YSC

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ProNine 52 YSC USA Slowpitch Softballs - 12 Inch - Dozen

$74.95

ProNine 52 YSC USA Slowpitch Softballs - 12 Inch - Dozen

The ProNine 52 YSC is the USA Softball approved slowpitch ball for sanctioned league play: a 12 inch slowpitch softball with a optic yellow synthetic tacky grip cover, medium seam height, and a solid polyurethane center built to 52 COR and 300 lb compression. It will not dent bats, which matters when the whole league swings composite. Sold by the dozen.

Built for Slowpitch Reality

Slowpitch softballs live a violent life: big swings, composite barrels, long seasons. The synthetic tacky grip cover holds up where leather scuffs open, the poly center keeps its pop, and the 52 COR and 300 lb compression build delivers the flight slowpitch players expect with USA Softball approval for sanctioned play.

Where It Fits

The 44 WSC is the white-cover twin for leagues that play white. USSSA leagues should head straight for the USSSA Classic series, and the whole wall lives in the slowpitch softballs collection.

ProNine 52 YSC Softball Specifications

  • Size: 12 inch
  • Sold by the dozen
  • Seam: Medium Seam Height
  • Cover: Optic Yellow Synthetic Tacky Grip
  • Center: Solid Polyurethane
  • 52 COR / 300 lb compression
  • Will not dent bats
  • USA Softball Approved

What does the COR number mean?

Coefficient of restitution (COR) measures bounce and the compression rating measures hardness; together they set how hot the ball plays. Leagues specify these numbers, so match your league sheet: this ball is 52 COR and 300 lb compression.

Yellow or white?

Optic yellow dominates modern slowpitch for visibility; some leagues and tournaments still call for white. Buy what your league plays.