ABC’s Shark Tank this Friday drew 6.9 million total viewers and a 1.6 rating, slipping 14 percent and two tenths week-to-week. Leading out of that, the Beyond the Tank spinoff premiere retained 6.3 mil and a 1.5, easily winning the 9 o’clock hour in the demo. Elsewhere…. NBC | Grimm (4.2 mil/0.9) dipped a tenth. […]