ProNine OL1 Official League Baseballs – Dozen

The ProNine OL1 anchors the economy end of the adult line: a raised seam official league baseball with a full grain leather cover, a durable PU and rubber center, and wool blend windings. It meets all COR and compression requirements for official league play, which makes it the classic one-ball answer for leagues and programs that want games and practice covered by the same dozen.

Built to Survive Volume
The PU and rubber center is the durability play: it absorbs repeated bat impact without cracking or going lopsided the way cork centers eventually do under heavy practice use. If your baseballs live in a bucket and see live swings every day, this center construction is why the OL1 lasts.

Official League Play, Honest Price
Full grain leather cover, precision raised seam, COR and compression compliance: everything an official league ball needs, without the premium interior you would save for game day at higher levels.

Where It Fits in the ProNine Adult Line
Above the OL1, the OLA and OLA-R step up to cushioned cork centers, and the OL adds premium leather. The OL1’s high school sibling with NFHS and NOCSAE stamps is the NFHS1, which shares this same durable construction.

ProNine OL1 Baseball Specifications

Official size baseball, sold by the dozen
Seam: Precision Raised Seam
Cover: Full Grain Leather
Center: PU & Rubber
Windings: Wool Blend
Meets all COR and compression requirements

Game ball or practice ball?
Both. It is certified for official league play and durable enough to be the practice bucket, which is exactly how budget-minded programs use it.
OL1 versus NFHS1?
The same construction class; the NFHS1 adds the NFHS authenticating mark and NOCSAE stamp required for high school games.