couldn't vs. couldn't have

0Hi,02br
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00I think you can basically say the same thing by using 'couldn't' and 'couldn't have'. They both refer to the past and indicate the capability at that time.02br
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00There was no way that I couldn't enjoy the game, not from the way we played offensively.02br
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00In regard to the above statement made by Nuggets coach George Karl after his team's spectacular performance on the field, would you say you could easily replace 'couldn't' with 'couldn't have' and have virtually no different in meaning? Only place I have seen 'could + verb' or 'couldn't + verb' being used is where the simplicity of context is involved like here:02br
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00Three years ago, I could do twenty push-ups.02br
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00How about these?02br
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00I could have done it but I diidn't.02br
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00I could have done it but I didn't02br
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00For the above two, I see virtually no difference. 0-