Bagwell, whose No. 5 was retired last August, will be one of five players with retired numbers scheduled to attend Sunday's event -- which will begin at 12:20 p.m. CT and will be carried live on astros.com. Jose Cruz, Larry Dierker, Mike Scott and Jimmy Wynn will also be present.
The list of invited guests is lengthy. Former second baseman Bill Doran and longtime coach and current special assistant to the general manager Matt Galante are scheduled to speak, along with club owner Drayton McLane, Bagwell, and Craig and Patty Biggio's eldest son, Conor.
Craig's mother, Johnna, and his brother, Terry, will also be in attendance, along with Craig and Patty's other two children, son Cavan and daughter Quinn.
Nancy Caminiti, wife of the late Ken Caminiti, is also scheduled to attend with her three daughters -- Kendall, Lindsey and Nicole. Biggio and Bagwell's longtime agent, Barry Axelrod, will be on the field, along with longtime traveling secretary Barry Waters and the dean of clubhouse managers, Dennis Liborio.
Biggio is the ninth Houston player to have his number retired. Jackie Robinson's No. 42 has been retired by all 30 Major League clubs in honor of his contributions to the game, meaning Biggio's No. 7 becomes the 10th number retired by the Astros franchise.
The 42-year-old Biggio is currently in his first season as a special assistant to GM Ed Wade, and he was also named head baseball coach at St. Thomas High School in Houston in May.
In addition to his jersey, No. 7, being unveiled alongside the other former honorees on the display above the right-field scoreboard, the Astros will present Biggio with a special gift. There will also be a tribute video shown on the SmartVision video board before the No. 7 is unveiled.
All fans in attendance Sunday will receive a special Craig Biggio jersey retirement pin, courtesy of AT&T. A commemorative Astros Magazine and other merchandise related to the event will also be available at the ballpark.
Since the early 1990s, Biggio has served as the main spokesperson for The Sunshine Kids, a support organization for children with cancer and their families. Frankie Velazquez, a young man whom Biggio met through his work with The Sunshine Kids, is also expected to attend the ceremony on behalf of the organization.
Alyson Footer is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.