(not being ranked)
Try to avoid parenthetical insertion. This is a good quote, but our insertion here suggests it's flawed somehow. It is not. We should just set up the quote better, so that the pronoun we substituted out makes sense as it is:
Sophomore safety O.J. Burroughs said not being ranked just increases the Jayhawks' motivation. "We use it for fuel, so we know just to keep going. ..."