Wilson, 26, returns to the Red Sox for his second stint in the majors in 2013. He was first recalled by Boston on April 9, and made 16 relief appearances, going 1-0 with a 2.50 ERA (5 ER/18.0 IP) with nine walks and 15 strikeouts. On April 11 against Baltimore, he became the first ever Saudi Arabian-born pitcher to appear in a major league game. In seven appearances for Pawtucket this year, Wilson is 1-1 with a 5.00 ERA (5 ER/9.0 IP), three walks, and nine strikeouts. He has not allowed a base runner in each of his last three Triple-A outings since June 5 (3.1 IP).