Congrats to all lifters for their achivements.
USPLA Rules, Part 4. POWERLIFTS AND RULES OF PERFORMANCE:
4.1.7 Upon receiving the Chief Refereeâ??s signal, the lifter must bend the knees and lower the body until the top surface of the legs at the hip joint is lower than the top of the knees. I know camera angles can be very deceiving when judging depth, so I hope this is the case, but it sure looks dodgy to me.