what is a baseball made of

3.01 The Ball

The ball shall be a sphere formed by yarn wound around a small core of cork, rubber or similar material, covered with two strips of white horsehide or cowhide, tightly stitched together. It shall weigh not less than five nor more than 5 1/4 ounces avoirdupois and measure not less than nine nor more than…

Don't strike out!

Become a part of the largest baseball rules community in the world!

Get free access to baseball forums, rules analysis and exclusive email content from current and former Major League Baseball players and umpires.