Daily notes on prospects from lead prospect analyst Eric Longenhagen. Read previous installments here.

Yordan Alvarez, DH/1B, Houston (Profile)
Level: Low-A   Age: 19   Org Rank: HM   Top 100: NR
Line: 2-for-5, 2 HR

Notes
Alvarez is hitting a preposterous .413/.500/.693 as a 19-year-old in full-season ball. Even once you acknowledge that better hitters at lower levels are going to have especially high BABIPs because they’re hitting balls harder than the baseline player at that level, Alvarez’s current .553 mark is unsustainable. Nevertheless, reports on the ease of his power and picturesque swing are very strong. There’s some swing-and-miss risk here but also a potential middle-of-the-order bat.

Adonis Medina, RHP, Philadelphia (Profile)
Level: Low-A   Age: 20   Org Rank: 6   Top 100: NR
Line: 6 IP, 6 H, 4 R, 2 HBP, 1 BB, 9 K

Notes
While he’s struggling with wildness, Medina’s delivery is so athletic and smooth that scouts think control will come. If/when it does, Medina’s several potential plus or better offerings (he has a chance for a plus fastball, curveball, and changeup, though the curve might evolve into a slider at peak) could make him a good No. 3 starter.

Melvin Adon, RHP, San Francisco (Profile)
Level: Low-A   Age: 22   Org Rank: 18   Top 100: NR
Line: 7.1 IP, 5 H, 2 BB, 2 ER, 6 K

Notes
Adon’s fastball sits in the mid- to upper 90s and he’ll flash a plus slider. He was sent to Augusta after improving his strike throwing as extended spring training trudged on and, while he’s still more of a thrower than a pitcher, he throws enough strikes now to be able to compete in affiliated ball. Realistically, because of the arm strength, he projects as a two-pitch reliever and potential closer, but it’s encouraging that he’s made strike-throwing improvements. He has the body to start.

Francisco Mejia, C, Cleveland (Profile)
Level: Double-A   Age: 21   Org Rank: 1   Top 100: 37
Line: 4-for-5, 2 HR, BB

Notes
Mejia homered from both sides of the plate last night. His swing is much more polished and composed from the right side of the plate but, even though he appears to be overswinging from the left side, his bat control and hand-eye coordination are so amazing that he’s difficult to strike out anyway. He also has burner-halting arm strength. His power output is likely to be middling and fringey, even at peak, but he’s a potential elite-hitting catcher with a plus-plus arm and thus a potential All Star.