For a starter yes, that line is terrible. For a young, cheap bench player that did 2 things well (defense and baserunning) that's not that bad. I'm not trying to suggest that GM jr "knocked in runs with his glove" but the Cubs ERA rose steadily after they released Matthews and brought in Tucker. That being said, I don't see why him not playing well in his first 3 half seasons has to do with rating him now. GM jr has evolved into a decent complementary player. He'd be an upgrade over Pierre based on improved defense but likely a wash offensively. In other words, he's nothing more than a fallback position.