Diaz shows a plus hit tool with excellent bat speed and a knack for recognizing pitches. There’s a natural loft to his pull side, but he has also shown the ability to drive the ball the other way with authority. He developed his bat tool and made a name for himself while playing for Venezuela’s youth teams back home in Aragua with a series of big hits. There’s also plus power projection.
On defense, Diaz shows plus arm potential and plus actions at shortstop. He’s a smooth fielder that can make plays to both sides. He can also run, and Diaz has been clocked at 6.4 seconds in the timed 60-yard run and has translated the speed into games as a good baserunner with basestealing potential.