This is a carousel. Use Next and Previous buttons to navigate 3 Astros season is under way (that's under way, not underway, and don't get me started on this topic), and there's a lot to catch up on for those of you tuning in late. A lot of you, however, have tuned in already. Monday's season opener on Root Sports Southwest recorded a 4.8 Nielsen household rating for an average audience of 117,638 households. That's a record for an Astros home opener during the Comcast/Root era, and it's equal to the audience for 13 Astros games during the 2013 season on CSN Houston. The most obvious change in Root this year is the presence of new play-by-play voice Todd Kalas and analyst Geoff Blum , who will work a full schedule after working mostly road games the last couple of years, replacing the retired Bill Brown and the deposed Alan Ashby . Kalas is the son of Harry Kalas , who began his big league career in Houston in 1965 before becoming … [Read more...] about On TV/Radio: New voices, camera angles among changes as Astros reel in viewers