With the deal Tuesday night, Texas got the 6-foot-7 right-hander who didn't sign after being picked by the Rangers out of a New Jersey high school in the 11th round of the 2007 draft.
Ranaudo then went to LSU and was taken by Boston as a supplemental first-round pick in the 2010 draft. He made his major league debut with the Red Sox last season, going 4-3 with a 4.81 ERA in seven starts. He was also 14-4 at Triple-A Pawtucket, where he was chosen the International League's most valuable pitcher.
Ross was 13-8 with a 3.98 ERA in his 150 games the past three seasons with Texas. He started 12 times.