I am surprised nobody has really made any sort of comment about the sox outfield and how it very well could be a significant weak link outside of Betts.
Starting with Rusney, per fangraphs he has a 0.4WAR in half a season. He showed a total inability to draw walks and a genuine lack of power. This from a guy who is going into the season as the starting RFer. His defense also left much to be desired, as his defensive rating was negative, yet his overall UZR/150 was solid. He did have a really solid month of August, which made a lot of sox fans happy about what might be to come, only to crash down to earth with a pitiful September, OPS'ing .555. I get that this was his first full season and all, and he does have some solid tools, but as a starting corner OFer, he leaves a lot to be desired. His range and arm are good in RF, but he makes boneheaded plays out there. He doesn't really hit for power. He doesn't really steal bases. He doesn't walk at all. I understand that he did it all in Cuba, but he better start doing it here, or he'll be on the bench right quick.
Jackie Bradley Jr is a defensive whiz, a true plus plus defender and a "should be" shoe in for GG consideration on a yearly basis. And his overall numbers offensively were very solid for him as well, with an OPS of .833. But looking deeper at that OPS, his August was an insanely ridiculous Barry Bonds on roids month. An OPS of 1.163. He had half his HR, 40% of his walks, 53% of his RBI and 53% of his runs on the season in that one month. Outside of that month, he slashed .190/.272/.366, which is pretty bad. Which JBJ will they get? I was on the bandwagon of dealing him while his value was up, but if he could even hit to a .750OPS and play his level of D, he'd be a borderline AS guy. Regardless, expecting big power out of him is unlikely, and based on his track record and his numbers outside of one otherworldly month, there is definitely a big reason for concern for this guy offensively.
Mookie Betts is the star in the OF. I liked his resilience, after struggling for a bit, he came back and dominated. People seem to think his natural progression is as a 30HR guy, but I think he is a safe 20-20 player who will make good contact, take more walks as he learns the game more, hit for a high average, play at least average D and pace your team from the top of the lineup. He is the only guy I think you can assuredly look at and say he will be an offensive force in the OF.
In essence, you have one budding star, one guy who has shown next to nothing on both sides of the ball and one defensive whiz who had one amazing month which bloated his overall numbers. Maybe it all works out and all 3 play well, or maybe you have one star and two slugs on the lineup card prompting a mid season deal.
And before anyone brings up Chris Young, that guy can only hit lefties. Hence, he will be a platoon guy with Bradley. But Bradley actually mashed lefties last yr to the tune of a .306/.390/.528 OPS. Young wont be in there replacing the righties Rusney and Betts. So his place in the lineup is puzzling unless JBJ shows his stats last yr were a fluke.