You might recall that Sierra was arguably the biggest name traded from the Cardinals to the Marlins back in December of 2017 in the Marcell Ozuna deal. Sandy Alcantara and Zac Gallen were also part of that trade. Oops. Sierra has struggled to stick in the majors because he's simply not strong enough to hit the ball with any authority at all. He managed just a .442 OPS over 96 plate appearances for the Angels in 2022, although he was 6-for-7 on stolen base attempts. Sierra has elite speed and stolen base chops, but he's probably never going to get on enough for it to matter. Read Past Outlooks