Joe Rizzo

At 5-foot-10, Rizzo lacks the height of a prototypical third baseman, but he has all of the other requisite ingredients to stick there long term. Possessing a powerful left-handed swing, he was given an over-slot $1.75 million bonus after going to the Mariners in the second round of the 2016 draft. He still hasn't fully tapped into his home run potential in games, but he also won't turn 19 until Mar. 31. He has an above-average eye at the dish (10.1 percent walk rate), which led to him performing as an above league average hitter (112 wRC+) in the Arizona League. He didn't drive the ball much over that span, but the M's are hopeful his power stroke will come around. The key will be Rizzo's hit tool, which some evaluators think could be a plus tool for the compact third baseman. His 21.3 percent strikeout rate was fine, but it is high enough to wonder how much contact he will make in 2017 when he makes his full-season debut.