Based on their success in their final season of college ball, of 2015 draftees David Thompson (Rnd 4), Patrick Mazeika (Rnd 8), Kevin Kaczmarski (Rnd 9), and Vincent Sienna (Rnd 14), Thompson and Kaczmarski would be the two expected to be the top performers in their pro ball debuts. Thompson tied for second in Division 1 baseball in homers, placed first in RBIs, and played in the College World Series while Kaczmarski had the highest batting average (.465) in Division 1. However, it's Siena, who played for Connecticut, who's had the most success. Playing second base for the Cyclones, Siena is second in the NY-Penn League in hitting (.367). Though yet to display much pop with his bat at the pro level — only three extra base hits (all doubles) in 79 At Bats, Sienna did hit seven homers (in 260 At Bats) in his final season at Connecticut.
In second place is Mazeika, who has hit .355 in his last 10 games with Kingsport, upping his season average to .328. Unlike Siena, Mazeika has shown some pop with the bat. In 67 At Bats, he has seven doubles and three homers for an ISO of .239, 201 points higher than Siena's.
It will be interesting to see, as the season progresses, if Siena and Mazeika can maintain their leads over Thompson and Kaczmarski.