The news came as the Orioles returned to Baltimore to begin their final homestand of the season with a one-game lead for the top spot in the AL wild-card race.
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Season ticket holders already had a chance to purchase seats for potential American League Championship Series and World Series games, but Bader said tickets for those rounds would probably not go on sale to the public until after the Orioles secure a postseason berth.
He added that a few more tickets could go on sale for the wild card and divisional series if the visiting team and Major League Baseball do not use their full allotments. Bader said fans should check Orioles.com regularly to see if more tickets become available.