Nelson will start Wednesday's game against the Mariners.
Original scheduled starter Domingo German underwent an emergency root canal Wednesday, and Nelson will take the mound in his place. Nelson last pitched for the Yankees in early June and has a 9.75 ERA, 1.92 WHIP and 20:9 K:BB over 12 big-league innings this season. He's mostly worked out of the bullpen in the majors, but he does have four starts in the minors.