PMChambers
Hall of Fame
Looks conti to me as well he just starts with cocked wrist.I did. Its a conti. So a screenshot.
Becker had more Eastern FH grip hence his motion.
BTW this is not a good top level serve in my book he has an abbreviated loop reducing his acceleration. I'd guess he had timing issues in past so abbreviated his serve.. Wouldn't surprise me if his coach starts lengthing and slowing his initial service action down to achieve higher and more consistent serve.