Haha, every time a commentator pronounces it "YOO-ler," I cringe so hard. I heard it over and over and over as "OY-ler" in differential equations and complex analysis and numerical analysis and every other math class (they still called the jump a half-loop back then).
Huh. I swear I've heard it pronounced OY-ler by commentators. The jump was a half loop like 2 years ago, so not THAT long. And the kind of math you're talking about scares me.
Most commentators say OY-ler, but a few do say YOO-ler. I also cringe at YOO-ler.