Ryan Flaherty will start at second base and bat ninth in Roberts’ place.
Manager Buck Showalter said there is a chance, depending on circumstances, Roberts could come back to the ballpark and be on the bench for the Orioles.
** Right-hander Jason Hammel (strained flexor mass) had an MRI on Friday morning, but the results hadn’t come back as of pregame.
** Seattle right-hander Aaron Harang is making his third career start against the Orioles and second this season. It’s his first start at Camden Yards. He pitched six innings of two-run ball while striking out five in an 8-3 Mariners victory over the Orioles on May 1. His only other start against Baltimore was Sept. 18, 2012, a game the Orioles won in 18 innings.
** Orioles right-hander Chris Tillman is 4-0 with a 0.98 ERA in four career starts against Seattle, the team that drafted him in 2006.
** Seattle leads the season series, 2-1. In 2012, the Orioles took eight of nine from the Mariners.
** First baseman Chris Davis’ 100 RBIs would have led 34 teams in Orioles history and tied for the lead in two others. He is on pace to drive in 149, one short of Miguel Tejada’s team record.
** Outfielder Henry Urrutia’s .333 average in his first 10 major league games is the sixth-highest in Orioles history behind Curtis Goodwin (1995, .475), Chito Martinez (1991, .355), Jeffrey Hammonds (1993, .351), Sam Bowens (1963, .344) and Howie Clark (2002, .341).
** Catcher Matt Wieters is hitless in his past six games and 22 at-bats, both career long stretches.
** Third baseman Manny Machado hasn’t doubled in 93 plate appearances and 21 games. His pace has fallen to 58, nine short of Earl Webb’s record of 67, but still two ahead of the team record of 56 set by Brian Roberts.
** The Orioles’ 11 hits in Thursday’s win snapped a streak of eight straight games with fewer than 10 hits.
** Third baseman Manny Machado and shortstop J.J. Hardy have started 149 games entering Friday on the left side of the infield. It ties Eddie Mathews and Johnny Logan for the fourth-longest streak in the majors since 1946. The longest in that stretch is 221 by Puddin’ Head Jones and Granny Hammer of the Philadelphia Phillies from 1949-51.
** Orioles top draft pick Hunter Harvey struck out eight batters and walked one in three shutout innings in the Gulf Coast League on Thursday.
Mariners: Miller 6, Franklin 4, Seager 5, Morales DH, Ibanez 7, Morse 9, Smoak 3, Saunders 8, Quintero 2; Harang 1
Orioles: McLouth 7, Machado 5, Markakis 9, Jones 8, Davis 3, Wieters 2, Hardy 6, Urrutia DH, Flaherty 4; Tillman 1