Sony got everything right! Only a few mistakes.
I was disappointed with the fact that there were literally no player and roster editing options, so we couldn't keep up with the rosters. But the career mode made up for that. I was hooked, and still am, on the career. The whole thing is really fun. You create your player, train him, take him from AAA to MLB, and soon make yourself a hall- of - famer(unless you stink, and get demoted to AA). The season mode is pretty fun too.
The graphics are very good, but a lot of the time, the game stops. The game will just stop for 2-5 seconds. That's OK though. The Home Run Derby and King of The Diamond modes are nice additions to the game. Most of the songs are good.
The game is very repetitive, though. Plays are repeated atleast 3 times in a game. The commentary is pretty good, but it is also very repetitive. Apart from this, the batting and pitching interfaces are rock solid and damn fun.
Overall, this game is the best handheld baseball sim I've ever played. There are very few flaws, and this game can be compared to most PS2 and XBOX baseball sims, and some are even better(for example, this game is much better than MLB 2005 for the XBOX or PS2). Cheers!