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Last night, the Orioles scored more runs than their opponent. This is what is known in sports as a "win." Apparently, if the Orioles win a second consecutive game this afternoon, thus achieving victory in each game of this series, that would be known as a "sweep."
Not that the Orioles suddenly solved any problems by winning last night's game, of course. Their starting pitcher pitched well against a bad offense, so it may not mean much, and their offense was generally bad against a bad starting pitcher. Another 2018 struggler awaits today in Zach Wheeler, who has a 5+ ERA. If you're in the NL with a 5+ ERA, that's pretty bad. But he still strikes out more than a batter per inning and his FIP is only 3.88, so maybe he's due for his luck to turn.
You already know the Orioles are putrid on the road. Here is one illustration: Their team batting line of .227/.285/.353 in away games. It is hard to be that bad - unless, of course, you are that bad, and then it's easy. And that's the space the Orioles comfortably occupy.