1) The Orioles will be lucky to have anymore wins than last years. In case you haven't noticed, they are at best the 4th best team in a tough division. There pitching blows, and there offense is hihgly overrated (Palmerio old and worhtless, Javy will not produce like last year, etc.)
2) DeJean, good likelihood Julio will lose his job when he blows a few saves, which will happen.
3) The trend the past few years is for teams out of contention to dump their so-so closers down the stretch to serve as set-up guys on other teams. Julio is certainly so-so.
4) He had a fluke year in 2002 in terms of WHIP and ERA. He blew in these areas throughout his long minor league career, expect numbers here like 2003, not 2002. He will hurt you in WHIP and ERA.
There are better options, Riske is one of them.