The 2020 33-inch Louisville Slugger Meta Prime bat was banned on February 21, 2020. It turned out to have too much power deeming it illegal Both high school and collegiate play aren't allowed to use the bat. The same model of bat has different molds and production runs between different sizes. The other Meta sizes are legal but only the 33 inch failed testing. There are no available refunds, but hose who bought the bat are granted a claim for a $550 to $650 Louisville Slugger gift card. The NCAA usually bans at least one bat a year, so its not atypical for a bat to be banned.