Forget the age factor, he had a K rate of less than 10% the last two years combined and after being promoted spike to over 20%. Hiura is debuting with a K rate of nearly 30%. Kid destroyed and overperformed for his age at every stop. Not sure why it wasn't expected for him to over perform at the MLB level compared to a normal rookie. Big jump yes, but Guerrero Jr. was no normal guy. I will temper my expectations for a guy who gets fanned at a high rate at AAA. Not sure why going to the MLB level will help that much and guys striking out 30% of the time don't typically provide much of meaning. It is really hard to predict how a guy will do when making the jump. Some guys sprint out of the gate and some don't. Some surprise compared to expectations and some obviously disappoint. Hopefully he looks competent. I agree that Hiura could struggle, and speaking for myself, I will only be disappointed if he comes up and is only subpar at the plate relative to other second basemen. For that position, I figure "average" is around 90 OPS+. For comparison, Perez is OPS+ 88 for the season, so to me, this move is a win if Hiura is better than Perez. I think that is a very reasonable expectation, and while he may see a big spike in his strikeout rate at the MLB level like Vlad Jr., I wouldn't take Hiura's 30% K-rate so far this year as necessarily indicative of who he is going forward. It seems he saw an early spike as he adjusted to AAA pitching, but has since leveled off his K/BB% quite nicely. So, long story short, I expect Hiura to play a lot and probably strike out a bit more than we'd like (and more than he's used to), but make strides in that area if given the playing time to adjust. He should at least be marginally better than Perez, and way better than 2019 Shaw (OPS+ 46, yuck!), and that is something everyone should be excited about. Whether he is a star, though, is anyone's guess. But it should be fun to find out. One other thing on that strikeout rate. Hiura had 15 K's in his first 5 games (21 PA). Since then his rate is down to 20.6%. I'm not expecting him to set the world on fire, but I also don't think there is a gaping hole in his swing that MLB pitchers will exploit at will.