Celesten was promoted to Double-A Arkansas on Sunday, Adam Jude of The Seattle Times reports.
Celesten will move up a level in the Mariners' minor-league system after he posted a .314 average with 13 home runs, 52 RBI, 64 runs scored and 18 stolen bases over 309 at-bats in 80 contests with High-A Everett so far this year. The 20-year-old is considered to be one of Seattle's top overall prospects, and he'll look to maintain his impressive level of production with Arkansas.