His defence is mediocre yes but his bat isn't. He has low power numbers for a typical first baseman but still, close to 20hr's and 80 rbi's with a decent average isn't what I call mediocre, especially for a guy that just turned 22 years old ans might get better with time.
I'm as big a fan of Marrero as there is and I can say his bat is mediocre. The knee injury and multiple position changes seem to have slowed him down. He's running out of the "young for his league" excuse. An .800 OPS at AA isn't good for a 1B. He's still only 22 so that next stage of development still has to be waited for, but right now Marrero doesn't really belong on the radar.
