There is no doubt that Dave Duncan is one of, if not the best pitching coach in Major League Baseball.

He has turned Chris Carpenter into a Cy Young Award winner, Adam Wainwright into a Cy Young contender and turned around the careers of pitchers Darryl Kile and Kyle Lohse.  But now Duncan has another tough task midway through the 2010 season: turning around Jeff Suppan.

The Milwaukee Brewers released Suppan this week after he was sporting an ERA of 7.84.  Suppan played for the Cardinals for two seasons, one of which was a championship year in 2006.  Suppan pitched well in his first start, pitching four innings and getting the victory.

Regardless, Suppan will be a challenge.  The 16-year veteran has not pitched well since his first stint with the Cardinals a few years ago.  But this is Duncan, the best pitching coach in all of baseball.  Can he turn Suppan’s season around?  It’s possible considering the Cardinals are not expecting Suppan to carry the load like Milwaukee did.

Duncan has a challenge ahead of him, but it isn’t the first time.  Expect Duncan and the Cardinals to make Suppan better, at least for the rest of the season.