De Leon was shelled for seven runs over just 1.1 innings Monday for Triple-A Oklahoma City.
As a result, De Leon's ERA jumped from 2.49 to 3.83. He's been especially dominant lately, at least prior to Monday, and given that we haven't heard of any sort of injury it's probably safe to chalk this one up to "one of those nights." At a minimum, however, this should quash any thoughts of a promotion for the time being.