 While he did not pitch in the Australian series, Rowland-Smith was on the Diamondbacks roster at the beginning of the 2014 season, his first time on a major league roster since 2010 with the Mariners.He made what would be his last appearance in the major leagues on April 14, giving up two runs (one earned) in the final two innings of a 7–3 loss to the New York Mets.Designated for assignment on April 18, he cleared waivers and elected to become a free agent on April 21.