Donaldson’s not the only player responsible for the team’s defensive slippage. Troy Tulowitzki supercharged the Jays’ infield defence during that huge run in 2015 and 2016, ranking among the league leaders in most major defensive categories. But injuries knocked him out for more than half of last season, and all of 2018 to date. In his stead, the Jays have trotted out a group of players who’ve been considerably worse than Tulo was defensively.
Devon Travis has compounded the infield’s defensive woes. In addition to being one of the worst hitters in all of baseball this year, Travis also ranks an ugly 31st among MLB second basemen in Defensive Runs Saved.
Add up all of those infield setbacks and you get some jarring results:
Blue Jays Opponent Average on Ground Balls (MLB Rank)
2015 .229 (t-4th)
2016 .234 (5th)
2017 .251 (t-17th)
2018 .275 (29th)
There’s more. Kevin Pillar was a defensive dynamo in 2016, leading the majors by saving 21 more runs than the average centre-fielder. You’ll still see him make some occasional Superman catches two years later, but he’s been less valuable overall defensively in 2018, ranking as a mere +1 by Defensive Runs Saved, just 17th-best in MLB