Guerrero is scheduled to go through a physical examination on Wednesday before anything is made official, and there is a tentative news conference scheduled for Friday. He was accompanied by one of his agents, Fernando Cuza, who will likely act as an interpreter for the Dominican native, who prefers to do his interviews in Spanish.
Guerrero's presence bolsters an Orioles lineup that has also added Mark Reynolds and Derrek Lee this offseason, and having the veteran's formidable bat on Baltimore's side will be a welcome change.
"I don't have to worry about calling a pitch that bounces and somebody hits it," catcher Matt Wieters said with a smile. "That's always good. I don't have to worry about trying to figure out how to call a game against a guy who can hit any pitch at any time."
"I was talking to somebody [and] they were like, 'Pick his brain, but don't swing at everything he does,'" Adam Jones said of Guerrero, whose stall is just several lockers down.
"Me personally, I'm pretty excited that he's here."
Guerrero agreed to terms with the Orioles on a one-year, $8 million deal on Feb. 5, although a substantial portion of it is deferred.
The 36-year-old Guerrero, who will wear uniform No. 27, entered with bags from the Texas Rangers and Montreal Expos, two of his previous stops. Last season with Texas, he hit .300 with 29 homers and 115 RBIs. Guerrero is expected to be the Orioles' cleanup hitter and everyday designated hitter, moving previous DH Luke Scott to left field.
"It's huge, because baseball is about consistency and you see what he's done for so many years," Wieters said of Guerrero's .320 career average. "You put that guy in the lineup and it makes our lineup that much better, because he gives you another middle-of-the-order hitter. We added another middle-of-the-order bat in Mark Reynolds. To get two this offseason is pretty special."
Along with Guerrero and Jones, new shortstop J.J. Hardy also reported to the Ed Smith Stadium complex for the first time on Wednesday.
Brittany Ghiroli is a reporter for MLB.com. Read her blog, Britt's Bird Watch, and follow her on Twitter @britt_ghiroli. This story was not subject to the approval of Major League Baseball or its clubs.