ProNine WTB9-10 Weighted Training Baseballs – 10 oz – Dozen

The ProNine WTB9-10 is a 10 oz weighted training baseball in regulation 9 inch size: leather cover, medium seam, and a cork and rubber weighted center. ProNine builds it for throwing programs, and the mustard yellow color makes sure a weighted ball never gets mixed into the game bucket. Sold by the dozen.

A Full Dozen for Throwing Programs

Weighted balls usually sell in three and four packs, which works for one athlete and falls apart for a team. The WTB9-10 comes by the dozen, so an entire pitching staff can run its throwing program at once without sharing. At 10 oz it carries roughly twice the heft of a regulation baseball, in the same 9 inch package hands already know.

Leather Where It Matters

The leather cover and medium seam keep the grip identical to a game ball, so mechanics stay clean while the cork and rubber weighted center does the loading. The distinct mustard yellow cover separates training weight from game weight at a glance.

Where It Fits

The ProNine WTB12-10 is the 12 inch softball version. For adjustable-weight work, the sand ball line runs from the 5.25 oz mini up to 5 lbs, with the throwing set boxing the heavy end. Browse the full wall in the weighted baseballs collection.

ProNine WTB9-10 Specifications

• Size: 9 inch
• Sold as: Dozen
• Weight: 10 oz each
• Seam: Medium Seam
• Cover: Leather
• Center: Cork & Rubber Weighted
• Color: Mustard Yellow
• Great for throwing programs

How should weighted balls be used?

Inside a structured throwing program with coach supervision and sensible progressions. Weighted-ball work is a training method, not a toy; follow the program your staff or trainer prescribes.

Why a dozen instead of a small set?

Teams. A dozen 10 oz balls outfits a whole staff session at a per-ball price the three-packs cannot touch, and every ball in the bucket is the same weight.