Failure to lock knees in a squat results in what color card?

In the context of the International Powerlifting Federation (IPF) rules, the color card issued for failing to lock the knees during a squat is indeed blue. This is significant because a blue card is specifically used to indicate a minor infraction or fault in technique that does not warrant disqualification but does indicate that the lift did not meet the necessary technical standards.

Locking the knees is a crucial part of completing a squat successfully. If the lifter does not fully extend their knees at the top of the squat, it can be seen as an incomplete lift, and thus the blue card serves as a warning about this specific issue. The lifter is informed of this fault to encourage proper technique in the future.

By issuing a blue card, referees emphasize the importance of achieving all required positions in the lift while allowing lifters the opportunity to correct minor errors in subsequent attempts. This approach supports fairness and sportsmanship in the competition.