So I went back and watched this fight in its entirety for the first time in a good 7 or 8 years, scoring along as I watched, backing up the video and watching the close exchanges a couple of times and for anyone saying it "wasn't that close" is trying to start an argument. I honestly think thats the closest fight I've ever watched.
Anyway, this is how I had it and at least 4 or 5 rounds had me saying, "Wow, that is a really hard round to score."
round/Leonard/duran
1. 9-10
2.9-10
3.9-10
4.10-9
5.10-9
6.10-9
7.9-10
8.10-9
9.9-10
10. 9-10
11.10-9
12.10-9
13.10-9
14.10-9
15.10-9
144-141 Leonard
In those late rounds, Duran was being aggressive and some people like that, some people score fights based on that. I thought that while it was "Duran's type of fight" that doesn't mean he was actually winning it.
That said, I don't stand by that score at all. Like I said, I am not sure I've ever watched a closer fight.