 He was sixth in the NL in wins and sacrifice hits (12), seventh in games started (36), eighth in complete games (12), and tenth in ERA (2.85) and walks per nine innings (2.24).Roberts was dealt along with Milt May and Jim Crawford from the Astros to the Detroit Tigers for Leon Roberts, Terry Humphrey, Gene Pentz and Mark Lemongello on December 6, 1975.After a 16–17 season with the 1976 Tigers, in which he was fifth in the American League (AL) in shutouts (4), seventh in games started (36) and ninth in complete games (18), he had surgery on his knee.