According to national baseball writer Tracy Ringolsby of the Rocky Mountain News, the Cardinals are among several teams that have expressed interest in pursuing outfielder Matt Holliday and lefthanded reliever Brian Fuentes of the Colorado Rockies.
Colorado (32-51) is last in the National League West, and according to reports out of Denver, the team will decide at the All-Star break whether to put players on the market.
Ringolsby's report cited the Cardinals, Angels, Dodgers, Tampa Bay and Kansas City as teams interested in Holliday.
The 28-year-old left fielder has 10 homers, 39 RBIs and a .332 average in 66 games after leading the Rockies into the postseason in 2006 with 36 homers, 137 RBIs and a .340 average.
Ringolsby wrote that the Cardinals are joined by six teams interested in Fuentes: Cubs, Yankees, Mets, Red Sox, Phillies and Tampa Bay.
Fuentes, 32, is 1-4 with 13 saves and a 3.94 earned-run average. He had 20, 30 and 31 saves the previous three seasons.