@mikemearls Rogue's Reliable Talent, page 96 PHB. D20 roll of 9 or less = 10 for (Proficency Bonus) Ability Check.
What about a 1? Fail?
— Richard Penwarden (@kaisnowshadow) January 6, 2016
A 1 is auto miss only with attacks, not saving throws or checks. https://t.co/ZOWMW7vVi2
— Mike Mearls (@mikemearls) January 7, 2016