What's the opposite of an upset in sports. Maybe "expected outcome"...
Terser would be better, but I'd hear anything that came to mind.
If you're looking for a terse alternative, you might describe an expected outcome as a given. (The word "given" is commonly accepted a noun in modern English.)
Consider the following two sentences:
They both sound pretty natural, and I would certainly consider them decent single-word antonyms.
The expression I would use is in line. "The result was in line (with expectations)."