16. Josh Donaldson

When the Oakland Athletics traded a rising star before the 2015 season, their attempt to sidestep rising arbitration costs led to one of the biggest cons in recent baseball history. The Toronto Blue Jays, believing they were one key player short of a historic breakthrough, went all out to acquire Josh Donaldson. Over the next four summers, the passionate and competitive third baseman didn't just secure the hot corner—he brought a bold, confident attitude that transformed the franchise.

"The Bringer of Rain" delivered an extraordinary, historic 2015 season right away. Leading a formidable Toronto lineup, Donaldson dominated the American League with 41 home runs, 122 runs scored, and 123 RBIs. His powerful offense was complemented by stellar, body-consuming defense at third base, earning an 8.5 bWAR season that thrilled fans. His outstanding regular-season performance earned him a Silver Slugger Award and the 2015 AL MVP—making him only the second Blue Jay to win this honor—breaking the franchise's 22-year postseason drought and guiding Toronto to the ALCS.

In 2016, Donaldson solidified his status as a dominant player, showing his MVP performance was consistent rather than exceptional. He earned his third straight All-Star selection, hit 37 home runs, set a personal best with 109 walks, and achieved a.404 on-base percentage. He concluded the summer with another Silver Slugger award and finished fourth in MVP voting. Notably, he made a dramatic dash from third base to score the game-winning run on a walk-off error in the ALDS, helping Toronto reach a second straight ALCS.

He maintained an elite level of run production into 2017, despite calf injuries, and still managed 33 home runs in just 113 games with his powerful right-handed swing. By 2018, the team’s championship hopes had faded. With an aging roster in decline and Donaldson hampered by ongoing calf issues, the front office decided to make a change. In August 2018, they traded their former MVP to Cleveland for a player to be named later, marking the quiet end of a significant era in Toronto baseball.

Over his four seasons in a Blue Jays uniform, Donaldson had 492 hits, 116 home runs, and 316 RBIs while generating a stellar .281/.383/.548 slash line (148 OPS+).