The Red Sox have traded Marco Scutaro, making room for... Roy Oswalt, perhaps?
According to WEEI, the move was made in order to free up payroll for the Red Sox, with which they could acquire another starting pitcher along the lines of free agent Roy Oswalt or perhaps Gavin Floyd via trade from the White Sox.
The deal will save the Red Sox about $6M this year. Scutaro would have been the team's regular shortstop this year, but will play 2B for the Rockies, with All Star Troy Tulowitzki holding down the shortstop job in Colorado.
The biggest question now is who will play shortstop in Boston. Most likely, Mike Aviles and Nick Punto will split time, and the Red Sox might find time for up and coming prospect Jose Iglesias.
Iglesias is a defensive prodigy, but doesn't have a whole lot of offensive upside right now. It is rumored that the Red Sox may still seek another upgrade at the shortstop position to replace Scutaro.
Mortenson will probably end up in the Red Sox bullpen. He's 26, and had a 4-8 record with a 5.12 ERA over the past 3 seasons with the Cardinals, Athletics and Rockies.