May 9, 2014, 8:35 PM EDT
Duncan, 34, spent the spring with the Diamondbacks, posting a .630 OPS in 25 spring at-bats. In a handful of playing time at the big league level last season with the Rays, Duncan posted a .606 OPS.
Marson, 27, spent the spring with the Phillies, doubling in one of his three at-bats. The Phillies released him in mid-March. Marson had spent his time with the Indians since joining them in the Cliff Lee trade in 2009.
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