Diaz went 4-for-5 with three doubles, three RBI, and three runs scored in a game with Low-A Wisconsin on Wednesday.
Wednesday's game was Diaz's best early this season, but he has impressed at the plate in other games as well, owning a .381/.519/.714 slash line and 6:4 BB:K ratio through seven contests. Diaz will turn 20 in May and is playing full-season ball for the first time this year, so he may spend all of 2016 with Wisconsin regardless of performance.