On Sunday, March 9th, the Prep Baseball Wisconsin staff traveled to the Hitters facility in Caledonia, WI to host one of the largest showcases on our winter calendar, the South Milwaukee Preseason ID. This event provided us an ample opportunity to check-in on some of the area’s high school prospects and identify several names as we prepare for the WIAA season, as well as future invite-only events on the PBR Wisconsin calendar.

In the week that followed this event, we produced post-event analysis that includes performance highlights inside of our Quick Hits story, a look at the traditional stats measured within our Statistical Analysis piece, batted-ball and pitch data covered in our Positional and Pitcher data dives.

You can learn more about the state-of-the-art technologies featured at our showcases within the hyperlinks above. Today we’ll continue our post-event process by rolling out the individual scouting reports of the day, continuing with the pitchers as we work our way across the diamond as the week continues.

TOP PITCHERS

1. Tanner Effertz, Whitnall (WI), 2026 |
Positional Profile: RHP/C
Body: 6-3, 195-pounds. Athlete, XL physical build. Strength throughout.
Delivery: Quick tempo, explodes, full extension over front side.
Arm Action: RH. Fully extends arm, over-the-top.
FB: T92, 91-92 mph. Heavy rise. T2434, 2359 average rpm.
CB: 78-80 mph. Heavy spin, late and sharp break. T2666, 2608 average rpm.
CH: 79-82 mph. Deceptive with feel. T1701, 1535 average rpm.