Just off the top of my head ...
2003 - Barbour was called for a terrible charge against Marquette when UK was digging itself out of a big hole and finally appeared to cut the lead to single digits on a bucket and what should have been an and-one. At that point, it was teddy ball-game. Momentum destroyed.
2004 - Azubuike was called for a horrific charge against UAB down the stretch in a game UK lost on a final shot attempt. I was right there and thought I might have to be restrained from attacking the ref.
2014 - Poythress was called for a criminal-level terrible charge against UConn in what should have been an and-one in the national championship game at a critical time.
2018 - Knox was called for a very debatable charge on what should have been an and-one against Kansas State, in a game UK lost on a final shot attempt. Not only did it wipe away 2-3 points for UK, but it led to Cal's infamous coaches box technical foul going the other way. It was a minimum 4-point swing, likely more, in a game decided by 3 points.
I know there are more, but these were critical and all went against UK. I have wiped the Elite 8 screwjob from my memory last year against UNC, so I'm sure there's one in there since it was a final shot loss.
2003 - Barbour was called for a terrible charge against Marquette when UK was digging itself out of a big hole and finally appeared to cut the lead to single digits on a bucket and what should have been an and-one. At that point, it was teddy ball-game. Momentum destroyed.
2004 - Azubuike was called for a horrific charge against UAB down the stretch in a game UK lost on a final shot attempt. I was right there and thought I might have to be restrained from attacking the ref.
2014 - Poythress was called for a criminal-level terrible charge against UConn in what should have been an and-one in the national championship game at a critical time.
2018 - Knox was called for a very debatable charge on what should have been an and-one against Kansas State, in a game UK lost on a final shot attempt. Not only did it wipe away 2-3 points for UK, but it led to Cal's infamous coaches box technical foul going the other way. It was a minimum 4-point swing, likely more, in a game decided by 3 points.
I know there are more, but these were critical and all went against UK. I have wiped the Elite 8 screwjob from my memory last year against UNC, so I'm sure there's one in there since it was a final shot loss.