Patrick Saunders of the Denver Post reports that it will be either Tyler Matzek or Franklin Morales taking Eddie Butler's (shoulder) spot in the rotation Wednesday. It was Morales who was booted from the rotation last week when Butler arrived, but the Rockies seem more likely to give Matzek a shot. The former first-round pick has put up a 4.05 ERA while striking out 61 in 66 2/3 innings at Triple-A Colorado Springs this season. A start at Coors against the Braves would certainly be a stiff first test.