Boston Red Sox in active discussions with relievers, per sources
Sergio Romo – mlbblogger
Video: Sergio Romo, Max Scherzer blow up over MLB sticky checks
Mike Fiers to start 2021 season on injured list
Giants' Derek Holland familiar with team's diehard fans — he's related to them – East Bay Times
MLB off-season tracker: Ex-Tiger Ryan Raburn to join Reds
Free Agent Profile: Sergio Romo - MLB Trade Rumors
Oakland Athletics were perfect misfits in the early 1970s – East Bay Times
Why Sergio Romo signed with A's despite offers from multiple MLB teams – NBC Sports Bay Area & California
Contrast between Blue Jays and A's not lost on Matt Chapman in Oakland return
2019 MLB Trade Deadline Rumor Tracker - MLB Daily Dish
Oakland Athletics: Sergio Romo ascends in Bob Melvin's bullpen