According to Jeff Passan, the Diamondbacks will call up prospect Geraldo Perdomo. He will make his major league debut, but it likely won't be long-term with rumors of Nick Ahmed hitting the injured list. (Jeff Passan on Twitter)
In the minors, Perdomo flashed above-average speed with three home runs and 26 steals in 2019. Perdomo typically displayed double-digit walk rates and low strikeout rates. It doesn't sound like he'll stick around long-term but could be a sneaky source of steals in 15-team leagues or deeper.