A third baseman out of Vanderbilt University, Esposito was the 64th overall pick in the June First-Year Player Draft and will receive a $600,000 signing bonus. Known for his defensive skills, the Connecticut native hit .340 with nine homers and 59 RBIs in 65 games this season.
Esposito took to his Twitter page to thank the Vanderbilt program, calling it the "three best years" of his life in Nashville. He also tweeted, "Thank you to all the Baltimore fans for the support! Looking forward to this experience!"
Delmonico, who used his Twitter page to break the story that he was an Oriole, was drafted out of Farragut High School in Knoxville, Tenn. The 19-year-old has a highly advanced bat and has one of the biggest upsides among the Orioles' draftees.
He is listed at 6-foot-3, 215 pounds and hit .426 as a senior with 11 home runs, 45 RBIs and 53 walks. Delmonico won four Class AAA state titles and ended his high school career with 45 home runs, 156 walks and 209 RBIs.
A coveted high school infielder -- believed to be a first- or second-round talent who fell due to money demands and signability concerns -- Delmonico will forgo a commitment to the University of Georgia. His signing brings the Orioles total to 21 of their 50 picks.
Teams had until 12:01 a.m. ET on Tuesday to come to terms with their draftees, meaning official notification has to be in the Commissioner's Office when the clock strikes midnight. A team that does not sign its first- or second-round pick will receive a compensatory pick in the 2012 Draft. That selection will come at the same slot, plus one. In other words, if a team doesn't sign the No. 9 overall pick, it would receive the No. 10 pick -- technically 9A -- the following year. A team does not receive a 2012 pick if it does not come to terms with a selection made with a compensation pick this year.