...+ Quidditch Acquisition Inc., an affiliate of Apollo Global Management LLC, entered into a definitive purchase agreement to acquire Qdoba Restaurant Corp. in a leveraged buyout transaction. + We are assigning our 'B-' corporate credit rating to Quidditch. At the same time, we are assigning our 'B-' issue-level rating with '3' recovery rating to the company's proposed senior secured debt. + The stable outlook reflects our expectation for relatively stable credit metrics and adequate sources of liquidity over the next 12 months. NEW YORK (S&P Global Ratings) Feb. 28, 2018--S&P Global Ratings today assigned its 'B-' corporate credit rating to California-based Quidditch Acquisition Inc., the parent company of Mexican fast-casual chain Qdoba Restaurant Corp. The outlook is stable. At the same time, we assigned our 'B-' issue-level rating and '3' recovery rating to Quidditch's proposed senior secured debt, consisting of a $35 million cash flow revolver facility due 2023 and a $203 million term...