The Diamondbacks promoted Thomas from Double-A Amarillo to Triple-A Reno on Monday, Zach Buchanan of The Athletic reports.

Monday was moving day for several of Arizona's more highly regarded prospects, as starting pitcher Luis Frias will move up to Reno with Thomas, while starter Brandon Pfaadt and outfielder Eduardo Diaz were promoted to Amarillo from High-A Hillsboro. The 21-year-old Thomas slashed .283/.374/.507 with 10 home runs and an 8-for-13 success rate on steal attempts over 329 plate appearances at Double-A.

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