If you need a tryout format for your league, All-Stars, or for an individual team, here are some good guidelines that are flexible and give coaches a good idea of the players' abilities.
Make sure you run them. Whatever distances your bases are, make sure they run a dash from home to first and a dash from home to second. Time and log everything!
HINT: Run them side by side if you are running in the outfield. The competition makes for better times.
Hitting will make or break a team. Have a coach or a consistent pitching machine throw about 10 pitches to every player. Giving only 3 or 4 pitches may eliminate some good hitters. Don't always look for the guy who can knock one over the fence if he strikes out a lot. Look for the guys who hit the ball hard, hopefully gap doubles. While some players are hitting, make sure you have other groups doing something else, such as running or fielding. Don't put all the guys on the field and have them play a game.....yet. When picking your team, always pick the guy that may hit for average and hopefully, some power. Remember, base hits will win you more ball games than the occasional long ball.
Fielding.... When hitting to them, make sure you hit pop ups, grounders, line drives, slow rollers, and make them go right and left. I would take a guy who is a below average hitter and an above average fielder rather than a good hitter and a poor fielder (you just run out of places to hide them on defense, especially if you have more than one of this type of player). Offense wins games but pitching and defense prevents losses. Another potential problem to avoid is the guy that is very limited to one position. This absolutely will hurt you more than you can imagine. You will find yourself realigning an entire team