Since there wasn't a channel listed for TV when I found the Orioles' broadcast schedule on their website, I figured I'd contact MASN directly and find out what's up. Sure enough, by the A's choosing a 1:05 pm PDT (4:05 EDT) start time, they've made sure no one outside California will see the game. Here's the official statement from MASN:
Due to Major League Baseball's national broadcast restrictions, the Baltimore Orioles 4:00 p.m. ET game in Oakland on Saturday afternoon cannot be televised by MASN.
Major League Baseball¹s agreements with national television networks forbid any regional network from broadcasting any Major League Baseball game during the window reserved for nationally televised baseball games.
According to MLB's website:
Due to Major League Baseball exclusivities, live games occurring each Saturday with a scheduled start time after 1:10 PM ET or before 7:05 PM ET and each Sunday with a scheduled start time after 5:00 PM ET, will be
blacked out in the United States (including the territories of Guam and the U.S. Virgin Islands).
For more information, please see MLB's blackout policy or Wikipedia's description: http://mlb.mlb.com/mlb/help/faq_subscriptions.jsp#q10
As the home team, Oakland chooses the game¹s start time and, unfortunately, decided to begin Saturday¹s game early.
No one but FOX can show a game during that time slot, and apparently, local FOX affiliates aren't showing the O's game. Baltimore City's FOX affiliate is slated to show the national game of the Mets at the Cardinals according to TitanTV. Same for Salisbury.
Looks like it's radio only for us on Saturday. It is, however, the only date this year that the O's will not be televised.