Team USA defeated Cuba yesterday in the semifinals, 12-10, and will play Canada for the championship at 8:00 P.M. this evening. Mercer was 1-for-3 with two runs scored, two RBI, and two sacrifice bunts. The full box score is here.
The games are being televised on ESPN3, if you have a much fancier cable package than I do (i.e. none). There's also an online stream for some cable subscribers at this link.