Yes, First I feel the key to showcases is making sure your target school or schools will attend.
My 2007 went to the BG at Middle TN State.
My son had a great coach and he was scheduled to play four games, he played three, one game was rained out. The key to this Showcase for my son was Vanderbilt. We new Vanderbilt would be at the Showcase and indeed he did receive a letter from Vanderbilt.
I liked the Showcase because there were only 13 players on a team. When a pitcher walked a batter,there would be a runner put on first base. I thought this made the games more realistic, and the coach kept everybody in the game, getting 3 or 4 ab bats per game. All the pitchers seemed to pitch one inning per game, and pitchers were allowed to play another position
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