Hopefully, they corrected the durability issues. Never seen a bat break that often. Barely anyone uses the bat and everyone I knew broke theirs very quickly. My daughter broke 3 in less than 4 months. Pretty sure that bat spent more time in the mail than it did in her hands. The first one broke the day we got it. The 2nd one broke within a week of getting. The 3rd one lasted about 1 month. 1-F19, and 3F20's
Mizuno warranty department did work with me. I sold the final replacement F20 on Ebay. Figured I was better off getting something for the bat instead breaking another one.
Hopefully they cleared up the durability issues as well.