this was all I could find, it's from last year:
Background: An unheralded fifth-round pick in June, Einertson tied a 44-year-old home run record in the Rookie-level Appalachian League. He went deep twice in the playoffs as Greeneville won the title, won the MVP award, and led the league in extra-base hits, RBIs, total bases and slugging.
Strengths: One scout said the last Astros prospect to have the ball jump off his bat like Einertson was Jeff Bagwell. He can turn around good fastballs and already has started to use the whole field. He’s aggressive in the outfield, where his range, jumps and arm are all decent to solid.
Weaknesses: Einertson struck out in nearly one-third of his at-bats, so it remains to be seen if he’ll be as explosive against higher quality pitching. While he played mostly center field in his pro debut, he doesn’t cover enough ground to play there in the majors. Houston tried him at second base in instructional league, but he had problems with his footwork and the switch didn’t take.
The Future: Einertson projects best as a right fielder. He’s headed to low Class A Lexington, where the franchise home run mark of 25 is within his reach.