Hit a homerun with high school approved bats. HQ4Sports offers a wide selection of high school certified bats. These BBCOR swingers will have you running bases in no time. What’s the difference among BESR, BBCOR and ABI tests? The BBCOR (Batted Ball Coefficient of Restitution) test is taking over for BESR (Ball Exit Speed Ratio). BESR tested a bat’s “exit speed.” BBCOR bat testing has replaced this test because the NFHS and the NCAA wanted a new bat rule that required bats to perform more like wood than the BESR standard. They also wanted to make sure they performed similar to wooden bats after being broken in. This new BBCOR test does just that - it makes sure that composite and aluminum bats perform like wooden bats even after they are broken in by including an ABI test (Accelerated Break-In Test). This test simulates bats that have been used heavily. This was done due to the fact that composite bats play better when they’ve been broken in and may not be similar to wooden bats after a lot of use. Shop from top-notch brands like DeMarini, Combat, Louisville Slugger, Easton, Rawlings and Worth.