So, your guy fitzge001joh is actually fitzgjo04, which unfortunately is not in the Master.csv file, which makes everything go ka-blooey, and the baby Jesus cry. Poor guy also, of course, imports with no real life stats. He was actually a one start and done pitcher, but because there are no stats for fitzgjo04 in the game, due to his not existing until those pesky baseball researchers uncovered Warren, he has no position, and no skills.
Here he is, after I made the changes in the Master.csv file using DrDoom's handy dandy OOTP Database Converter, but before I've been able to get into his Batting, Fielding, and Pitching files to fix him up right using same. I suspect John H, (formerly fitzgjo02, but now fitzgjo03) will have his stats, and so on. I'm glad these researchers are slogging through history to uncover these previously unknown gents, but they're really messing up our games. His age, and facegen are right though, so...There's that.