Correct me if this is not applicable to you... I am going to pick out one moment in particular as an example but there were others, in MS2 @ 47 seconds. Your shot selection was really odd. Often your choice of shot, when it is right, is played well and all the related movement is fine. This particular neutral drop put your opponent in such an advantageous place it would be unthinkable to do it at all. Which is the problem, "unthinkable" yet it is what you did. Your quality of shots and movement are being well taken care of by your coach and suggestions from BC members. It is probably fair to say that your judgement on the day was being clouded even when you were under little or no pressure. Clouded judgement should be expected under extreme pressure so you may need to look into the mental side of things - do some sports psychology homework, either reading or watching some TEDx talks. There is plenty out there. You know yourself best so consume knowledge that helps you how you prefer. Did you feel like your mind was distracted or lost in some way? Spoiler: If you are still interested and it is applicable A lot has been made of high performing people (athletes and non athletes) being able to do their thing whilst being able to have a conversation with others and talk about unrelated things at the same time e.g. streaming gamers talking about random stuff with viewers whilst playing very well, racing drivers talking about their strategy and other teams strategies all whilst driving over 200mph or under 3g+ lateral loads. It is astonishing and something you are born with but we are also born with a multi-layered brain that can be overwhelmed by internal thoughts and external stimuli without us realising it. Start simple; as you play try to have an internal conversation about what you want to do before doing it. For example, whilst waiting to receive serve have plans of what your response will be and what your opponent will do. "If they serve deep I want them to deal with a fast drop to their backhand so I can attack the mid-front court or get a high lift". "If they serve short I want to force them to lift so I am in control". You can only plan 1 or 2 shots in advance before the number of variables gets too great so keep it simple. During a rally you will fall back on a number of options that work best for you, freeing up more capacity to think about your shot quality. There are 2 benefits to making sure you have actively thought about what it going to happen and at your reactions - you are only focusing on the shot/rally ahead and not thinking about anything else that is going to distract you and overwhelm your brain. This leaves capacity to imagine outcomes based on actions which are pretty simple thoughts. Choices about how you take a shot - china jump or turn and use backhand..brushing a loose net shot or tumbling it from below the tape - can all be made sooner and decisively leaving you to focus on quality. The mind is a fragile house of cards. Hard enough to build and even harder to maintain if they start to tumble. A mental reset may have saved your day but for whatever reason you struggled and have been left with a bad day at the office. It happens but it should not happen again if you can find a way to control your state of mind. Start by gluing some of the cards together so they are never going to tumble. Certainties like your overall shot quality is good, your movement is solid, your speed is good...these cannot be affected by anything so if you feel like your game is not going well you know it is not going to be difficult to rebuild your house of cards. Just try one card at a time until you are back and in control mentally.