Sammy came in with his team reeling at 162 for six. He went for a big heave at the second ball he faced and ended up in a regulation catch for Rohit Sharma.
It was Ashwin's 100th Test wicket, making him the fastest in this category in post-war Test cricket.
It was hard to see Windies falling like a pack of cards after a decent morning session when Powell and Bravo battled it out with aggression and determination.