The Orioles acquired Triple-A right-handed reliever Richard Rodriguez from the Houston Astros on Thursday in exchange for a player to be named later or cash, according to an industry source. Rodriguez was 5-0 with a 2.57 ERA in 23 relief appearances with Triple-A Fresno, allowing 32 hits in 42 innings while striking out 36 and walking 10. Rodriguez, 25, has posted a 7-0 record and a 2.94 ERA in 70 1/3 relief innings at Triple-A. … Norfolk right-hander Zach Davies has been named to the U.S. team in next month's All-Star Futures Game on July 12 in Cincinnati. Davies, who is the Orioles' No. 6 prospect according to Baseball America, is 3-4 with a 2.94 ERA in 14 games (13 starts) with the Tides and has allowed three runs or fewer in 12 of his 14 games. … Third baseman Manny Machado extended his hitting streak to seven games Thursday. … Right fielder Delmon Young's fourth-inning single ended an 0-for-13 skid. …Shortstop J.J. Hardy has hit safely in 14 of his past 17 games. … Designated hitter Jimmy Paredes will be signing autographs and longtime Baltimore sportswriter Jim Henneman will be signing his book "Baltimore Orioles: 60 Years of Orioles Magic" at the Orioles team store at the York Galleria in York, Pa., on Monday from 11 a.m. to noon.