Statistically, the expected number of runs with a runner on 2nd and no outs (1.19) is higher than the expected number of runs with a runner on 3rd and one out (0.99). Personally, I don't see a reason to give up an out with a capable hitter at the plate and other good hitters to come unless you need exactly one run (end of game, need to tie or win). You have a better chance at a big inning if you don't sacrifice with a runner on 2nd and no outs. Here are some stats on the different base runner/out scenarios, based on 2007 results: http://www.baseballprospectus.com/statistics/sortable/index.php?cid=204022 As for not using our speed, the Brewers are 4th in the NL in SB and have the best SB% of those four (and one of those outs, Braun on the double steal, was a bad call by the ump). Speed is used in other situations, too, such as being aggressive and taking an extra base when possible. Corey Hart, in particular, has been doing this wonderfully.