ProNine OL Official League Baseballs – Dozen

The ProNine OL is the workhorse of the adult line and ProNine’s most popular game ball: a precision low seam baseball with a premium full grain leather cover, cushioned cork center, and premium wool blend windings. Adult leagues, college club teams, and training programs buy it by the case because it plays like a top-shelf ball at a mid-line price. Sold by the dozen.

The Construction That Made It Popular

Premium full grain leather breaks in quickly and holds its grip in real baseball conditions. Inside, the cushioned cork center and premium wool blend windings keep the ball round and lively through weeks of games and live batting practice. It is the balance point of the line: real game-ball interior, sensible price.

Low Seam, True Flight

The precision low seam gives the OL the flatter profile adult and college baseball is played with, producing faster, truer ball flight and a consistent feel for pitchers working the edges.

Where It Fits in the ProNine Adult Line

Above the OL sit the professional-grade PRO and NCAA-spec CL. Below it, the OLA trades a leather grade for durability-first value, and the OL1 anchors the economy end. The high school equivalent with NFHS stamps is the NFHS.

How It Compares to Other Brands

By model number, the OL compares directly to the Rawlings R100HS, the Wilson A1015, and the Diamond D1-OL.

ProNine OL Baseball Specifications

• Official size baseball, sold by the dozen
• Seam: Precision Low Seam
• Cover: Premium Full Grain Leather
• Center: Cushioned Cork
• Windings: Premium Wool Blend

Game ball or practice ball?

It is built as a game ball, and that is how most leagues use it. Its durability also makes it a favorite for high-volume live batting practice at programs that want practice reps on a true game ball.

OL versus OLA: which one?

The OL uses a premium grade of full grain leather; the OLA uses standard full grain leather with the same cushioned cork center. If budget decides, the OLA gives up little; if feel decides, the OL is the pick.