The first three rounds of the 2012 MLB Draft are in the books but there is no slowing down as the fourth round gets underway on Tuesday. The Houston Astros once again hold the first pick in the fourth round. With the No. 129 overall selection in the draft, the Astros have picked up a high school third baseman.

The Astros selected Rio Ruiz out of Bishop Amat High School in California. Ruiz bats left-handed and throws right-handed and has drawn comparisons to Eric Chavez. He is a contact hitter and is solid on defense. With conditioning and seasoning, Ruiz just may be manning the hot corner in Houston a few years down the line.

You can click here to watch live streaming coverage of Day 2 of the 2012 MLB Draft at MLB.com.

Read more about the Houston Astros at The Crawfish Boxes and head over to Baseball Nation for additional news, notes and analysis around Major League Baseball. Check out Minor League Ball to see how some of these prospects develop in their quest to the major leagues.