The word "oop" is a quick expression used to describe a small mistake or an unexpected happening. It is often used in a lighthearted way to acknowledge that something didn't go as planned or to show surprise. Full definition
Michigan opened up their third round matchup against Texas on a 29 - 6 run that included this ridiculous alley oop from Nik Stauskas to Glenn Robinson III. (diehardsport.com)
The play that really stood out and was the dagger in the game was this Blake Griffin alley oop dunk in transition, on which only one Laker player got back on defense, Wesley Johnson. (diehardsport.com)
Parker caught a Quinn Cook oop in the second half (GIF below) that looked all too similar to the one by Grant Hill in the 1991 National Championship game also against Kansas. (diehardsport.com)