Newly signed Boston Red Sox catcher Jonathan Lucroy had the unfortunate experience of seeing the Houston Astros' sign-stealing operation firsthand over the last three years. Major League Baseball handed down unprecedented punishments to the Astros in January after completing an investigation on Houston's in-depth system created to illegally steal signs from opponents. LIVE stream the Celtics all season and get the latest news and analysis on all of your teams from NBC Sports Boston by downloading the My Teams App.