Kris Bryant had a rather difficult season. Some of that was due to his wrist, but five stats definitely tell the tale of just why the Chicago Cubs' 3rd baseman had the kind of season he did.
Strikeouts
One trend that has improved as Kris Bryant continues his career is his strikeout rate going down. He had 199 his rookie season, 154 in 2016 and just 128 in 2017. While he technically had less (107) he also had more than 200 less at bats than the prior year. It's safe to say his Ks would have gone up if he'd played in his usual 150+ games.
On base percentage
Much like strikeouts, there was a very obvious trend in improvement over Bryant's career as a Cub. His OBP climbed from .369 in his rookie year to .409 in his third season. It dropped to an almost career low of .374 last season.
Slugging percentage
Speaking of career lows, Kris Bryant's slugging was indeed the lowest he's ever seen in 2018. Not only was it his lowest but his .460 slugging was 28 points lower than his previous low.