Thu 9/15/11 5:49 PM

Vikings MLB E.J. Henderson has been sent for X-rays after a sore knee prevented him from practicing Thursday. It's concerning news after Henderson was a full participant in Wednesday's practice. With Henderson's primary backup Jasper Brinkley on injured reserve with a hip injury, Xavier Adibi and Erin Henderson took first-team reps in his absence Thursday. Hopefully he's only dealing with a sprain or bruise.