Alvarez was one of the most highly-touted amateurs on last year’s international market. The Mets signed him to a hefty $2.7 million bonus the first day he was eligible to turn pro last July. A thick-bodied 5-foot-11, Alvarez already is close to mature and will need to keep his body in check. He’s extremely strong for his age, however, with massive forearms and hands that bode well for future pitch receiving. Alvarez earned his prospect reputation on the strength of an advanced bat, generating big raw power for his age with a strong, balanced stroke. There’s length to his swing-path but ample time to make adjustments, with hands that explode through the zone with rare batspeed for a hitter this age.
His defense at catcher isn’t as refined, and his long-term defensive home will come down to how much progress he makes as a receiver. His arm is very strong and could finish an above-average tool, something that should help him stay at the position down the road. Alvarez is still just 17 and has yet to play in any official pro games, one of the youngest players currently stateside for Extended Spring Training but already holding his own. The chance to be a power producer at a premium position gives a very high ceiling, though there’s similarly high risk considering the fail rate for catching prospects and how far away he is.