The O's will wear a black circular patch with "FLANNY" written in white on their right jersey sleeves for the remainder of the 2011 season, and that's just the start of the team's plans to honor the former pitcher and executive.
Flanagan passed away at age 59 on Wednesday, and Friday's 7:05 p.m. ET contest is the Orioles' first home game since his death.
On Friday, the club will observe a moment of silence in Flanagan's memory, his uniform No. 46 will be posted on the out-of-town scoreboard in right field and a video tribute will be played after the first inning.
Elsewhere around the park, Flanagan's memory will be felt. A black banner with the No. 46 in orange has been installed just above the press box at Camden Yards, right below the booth where Flanagan called games for MASN, and the O's flag on the right-field flag court will be flown at half staff for all remaining home games.
Fans can share their memories of Flanagan, who won the American League Cy Young Award in 1979 and was with the Orioles for 15 seasons, in a virtual guestbook at orioles.com/flanny.