Cubs lefty Justin Steele to start Sunday at Diamondbacks

Cubs lefty Justin Steele didn’t have to miss a start for the thumb injury he sustained against the Dodgers last week.PHOENIX – The Cubs’ probable pitching list has been littered with TBDs the past week, but on Saturday, the Cubs filled in the latest.

Cubs lefty Justin Steele is scheduled to start in the Cubs’ series finale against the Diamondbacks on Sunday. Steele last pitched a week ago, leaving the game after the fourth inning with left thumb soreness.

“We try not to wait too long to get these guys in but also [wanted to] make sure his thumb felt good,” Cubs manager David Ross said Saturday.

Too many days between starts means a risk of “rust,” as Ross puts it. He pointed to Drew Smyly’s…