@JeremyECrawford @mikemearls If a target is prone and is then grappled can the target stand up or does target have to break grapple first?
— Josh Fredrickson (@JKFWEB) May 11, 2017
The grappled condition reduces your speed to 0. The rule on being prone says you can't stand up if your speed is 0 (PH, 190–91). #DnD https://t.co/9YE6Yz0nrf
— Jeremy Crawford (@JeremyECrawford) May 11, 2017