Pagan was recalled from Triple-A Tacoma on Monday.
This will be Pagan's second stint with the big club in 2017, as he appeared in two games for the Mariners earlier in the season, allowing five runs through 2.2 innings. Despite his big-league struggles, Pagan does own a 3.24 ERA and 21:7 K:BB through 16.2 innings at Triple-A this season. Pagan replaced Chris Heston on the roster, though his stint could prove to be short with the Mariners in need of another spot starter over the weekend.