Umpires took more than 50 bats from players at last year's USA/ASA 18-under National Fastpitch Championships in the Quad Cities.
The same thing happened in Normal at last month's Firecracker Tournament.
With some bats costing more than $300, having one taken out of play is no small matter. "It's all a safety issue," said Donna Shurtz, the umpire coordinator for this week's USA/ASA 12-under National Fastpitch Championship at Champion Fields.
Shurtz, standing over a barrel of 10 confiscated bats in the press box Wednesday, said bats are taken out of play if any chips or cracks are visible no matter how small.
"Every now and then you will see a bat actually shatter," said Tim McKeown, coach of the BNGSA Angels 12-under team, co-host of the tournament with the Angels 11s. "There are a lot that are fracturing."
Some bats are made of exotic materials including aluminum lined with graphite and titanium. Others are made of composite materials such as carbon fiber, fiber glass and Kevlar.
Bat makers seek to create lighter bats with bigger "sweet spots" so batters can generate more power in their swing.
Shurtz remembers Californians bringing bats to the Quad Cities last year only to learn they couldn't be used.
"They're upset and I'm sorry about that," she said. "As umpires, it is our responsibility that all equipment is safe and legal for the safety of the kids."
Kim Nelson-Brown, coach of the Angels 11s, said her daughter, Tyler, is on her fourth bat of the year.
Read more: Umpires confiscating softball bats due to safety issues