Marvin Burke's Baseball & Softball Training ... Marvin started using the PerfectSwing & PerfectPitch as trademark terms to identify his Better Performance Plus ... Safety training methods in the early 90's.   Marvin went online with his first website, PerfectSwingandPitch, in 1998.  When you choose the PerfectSwing or the PerfectPitch training methods you have the peace of mind that your child will perform better...longer....and safer.