Steele (thumb) will start Sunday's game against the Diamondbacks, Jordan Bastian of MLB.com reports.
Steele was removed from his last start due to a left thumb issue, but he tested things out off the mound Friday and will be cleared to make his next turn through the rotation. Over his last five starts, the southpaw has posted a 6.88 ERA and 2.00 WHIP in 17 innings.