Javier Lopez has been wearing his 2010 World Series ring on the San Francisco Giants’ current road trip, and he had it stashed carefully in his locker in the visiting clubhouse at PNC Park in Pittsburgh on Wednesday afternoon, as he dressed for the Giants’ game that night.

“Gotta have it with me when we go to D.C.,” explained Lopez, a product of Robinson Secondary High School in Fairfax and the University of Virginia. “I’ve got a lot of people who want to see it – family, high school friends, college friends.”

Eventually, the ring, which Lopez earned as a key member of the Giants’ bullpen during the team’s run to the 2010 championship, will go into the safe-deposit box, alongside the one he won with the Boston Red Sox in 2007. But for now, he keeps it with him pretty much everywhere he goes, with the exception of the bullpen itself. And as the Giants prepare to open a three-game series in Washington against the Nationals on Friday night, Lopez is still trying to decide which friends and family members he’ll allow to try on the ring, and which ones only get to look at it.

“I’ve got two little nieces,” he said, “and I think they’ll just get to look, because if I let them try it on they might throw it.”

Meantime, word arrived Wednesday that another D.C.-area native will celebrate homecoming this weekend, as the Giants called up infielder Emmanuel Burriss, a product of Wilson High in the District, to take the roster spot of veteran Mark DeRosa, who was placed on the disabled list. Burriss, who opened the season with Class AAA Fresno, was expected to join his Giants teammates in Pittsburgh on Thursday.

“The timing couldn’t be better for him,” Giants Manager Bruce Bochy said. “He was hopeful of getting up here [to the big leagues] before we got to Washington.”

For that matter, Bochy himself has local ties. His family lived in Northern Virginia for several years during his youth, and Bochy actually delivered The Post in his neighborhood for a time.

Typically, the Giants, by virtue of their World Series title and the fact this is their only trip to Washington this season, would be invited to the White House and granted an audience with the president. However, the Giants were told President Obama could not accommodate them this weekend – so the Giants scheduled a visit to the Supreme Court instead, and will get their White House tour in July prior to a series in Philadelphia against the Phillies.