Lineup Baseball

Before iMobdev got involved, youth and travel-league baseball coaches building a Lineup Baseball roster were still doing it the way coaches had for decades: a paper lineup card on a clipboard, filled out by hand in the parking lot before first pitch, with positions crossed out and rewritten every time a substitution rule forced a change. Lineup Baseball wanted to replace that clipboard with a phone.

The pain points were concrete. There was no way to track which position a player held inning-by-inning without redrawing the whole grid by hand. Enforcing mandatory-play substitution rules across a 13-player roster and six innings meant a lot of error-prone mental math done under pressure. And once the lineup was set, coaches still needed a clean, printable copy for the opposing scorekeeper and the umpire, plus a way to text or email it to assistant coaches and parents.

Every lineup mistake had a real cost: a misplayed substitution rule could mean a forfeit or an ejection, and a sloppy handwritten card undermined a volunteer coach's credibility with parents watching closely from the stands. Coaches needed something they could trust completely, every single game.

Technically, the app also had to work with zero assumptions about connectivity — most fields have no reliable Wi-Fi or cell service — so everything from roster storage to print formatting needed to run entirely on-device.

Lineup Baseball shipped as a genuinely faster way to run a dugout: a coach can build a full multi-inning batting order in the time it used to take to find a pen, then print or text it to everyone who needs a copy before the umpire calls "play ball." The dual print formats gave coaches a version for the scorekeeper's table and a simpler version for the dugout wall, without any extra data entry.

Volunteer coaches got their evenings back, and parents got a lineup they could actually read. iMobdev continues to support Lineup Baseball as it explores multi-team season management and an Android companion app.