You would normally use such devices in exactly the same way that you would emphasise words in spoken English. There are two options that would make sense to the reader: 1) Italicise "management" on its own, as that is the differentiator, OR 2) Italicise both "sports" (in the first half of the sentence) and "sports management" in the latter half. Hope that helps.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
Starvinghystericalwhere exactly I should italicizeI see no reason whatsoever to italicize anything in that sentence.