Through seven appearances with the Red Sox, Thomas posted a 7.71 ERA in 4 2/3 innings, walking two and striking out two. Two of those appearances (and one of those runs) came against the Yankees.
Thomas is the second player the Red Sox have lost to an American League East team this season. The Orioles claimed Luis Exposito on April 17.
Thomas also pitched for the Mariners in 2008, and the Pirates in 2010. He has a career ERA of 6.65 in 21 2/3 innings across 27 appearances.