recognized the importance of taking out Standstills for this matchup, because he can match me Strip effect for Strip effect, burn for burn, and manland for manland
While its true that they can match you strip for strip, doesn't Urfish usually only run 2-3 conclaves? On top of that, Landstill has more burn, and usually more stifles (for the strips), so you win out here as well. I'm not saying you shouldn't still take out the standstills (I've never tested either way), but it seems this is the wrong reason for doing so.
The Null Rods were a mistake to sideboard in, and I changed my plan after that to reflect my newfound knowledge. I changed them back for Disks, a card that would demonstrate its usefulness time and time again that day.
If you're not going to bring in null rods against slaver, then why board them at all? I know they're good against draw7.dec, but I don't really think thats enough of a metagame consideration to warrant four sideboard slots.
As far as null rod against slaver, its tough because they should be more effective than disk at slowing them down, provided you also can bring in a few rack and ruin/shattering pulse, and just drain their fat and burn their welders. However, they also make you more susceptible to chalice for 2. Any Slaver players care to comment?
Overall though, I echo everyone's comments that you've written a great report. The commentary on 'combos' made my day. Congrats on making the finals.