The Brewers promoted Pratt from Single-A Carolina to High-A Wisconsin on Monday.
The 19-year-old made his debut for Wisconsin in Tuesday's 14-9 loss to South Bend, starting at shortstop while going 1-for-4 with a solo home run and an additional RBI. One of Milwaukee's top lower-level prospects, Pratt earned the promotion after slashing .295/.394/.395 with three home runs and 25 steals across 310 plate appearances for Carolina.