Who's been the most disappointing Oriole?

Last night, I spotted former reliever Arthur Rhodes hanging with friends in Ocean City. He hasn't signed with the Orioles and he isn't reporting to Triple-A Norfolk so he can be stretched out as a starter. That was my first thought. As for current Orioles, since I debated who was the most valuable of the first half yesterday morning, it only seems right to shift the attention to the most disappointing. Keep in mind that I'm not declaring my candidates to be lost causes in 2012. They've just underachieved and underwhelmed leading up to the All-Star break. My choice is opening day starter Jake Arrieta, since I declared back in spring training to anyone who would listen that the right-hander was going to blow up this season - and in a good way. I thought he'd win at least 15 games and establish himself as the ace of the staff. I didn't imagine him going 3-9 with a 6.13 ERA in 18 starts and being demoted to Triple-A Norfolk. Shortstop J.J. Hardy continues to come up with at least one defensive play every game that makes me shake my head in amazement, and not because they're flashy. He's invaluable with the glove, and it really shows on a team that leads the majors in errors. However, he's batting .224 with 12 homers, 33 RBIs and a .642 OPS. That's disappointing. So is the herniated disc and the surgery that most likely ended Nolan Reimold's season. I guess his circumstances are disappointing. He was given the opportunity to be the regular left fielder and his body let him down again. Mark Reynolds hit 37 home runs last season. He's got seven this year, to go with 23 RBIs and a .207 average. He makes the list. I could tweak the category and call it "least valuable," which widens the field. Maybe your expectations weren't grand for veteran outfielder Endy Chavez, which prevents you from being disappointed with his .162 average and .402 OPS in 32 games, but there isn't much value in those numbers. The opening day rotation, now down to two pitchers, provides a variety of choices. I've excluded guys like Tsuyoshi Wada and Taylor Teagarden, who haven't appeared in a single game. Maybe you feel differently. Down on the farm, Norfolk reliever Miguel Socolovich struck out two batters in a perfect inning last night in the Triple-A All-Star Game. Bowie infielder Jonathan Schoop, playing second base, went 1-for-2 with a run scored in the Eastern League All-Star Game. Outfielder Robby Widlansky went 0-for-4, Zach Clark (UMBC) allowed two runs and four hits in one inning, and Pedro Viola struck out a batter in two-thirds of an inning. Chavez, nearing an end to his injury-rehab assignment, went 1-for-4 with an RBI and a run scored at Single-A Delmarva. Teagarden went 0-for-3 with a walk and two strikeouts. First baseman Tyler Townsend, activated from the disabled list and removed from his rehab assignment, went 1-for-4 with a walk and run scored for short-season Single-A Aberdeen.