I don't expect much from preseason due to the varying approaches head coaches will have in preparing their team for the regular season.
For Preseason week 3, I ended up 7-9 ATS and 4-11-1 for Totals
For Preseason week 4, I ended up 8-6-2 ATS and an identical 8-6-2 for Totals
For all of preseason, my record for picks is 33-30-2 ATS and 30-32-2 for Totals, not bad, but not good either. I guess that's fairly consistent for preseason. That's why most bettors won't bet during preseason, their needs to be a really good reason or an 'angle' or two to even think that you have a chance of winning...