What Stats Explain the 2017 Boston Red Sox?

[AB in DC]

In the first half, the Red Sox had the second-best bullpen ERA (3.08) and the third-best bullpen FIP (3.55) in the American League.

Yet only two relievers from that bullpen made the ALDS roster.


*not counting 2 IP from Maddox and 1 IP from EdRo.

 

[simplicio]

I did. He’s tied with Kiermaier for sixth among all outfielders in Outs Above Average.

I think of particular note is the catch probability tab from that page. Of outfielders with more than ten 3 star catch opportunities, JBJ is second only to Buxton in catch probability, despite a top speed nearly 3 feet/second slower. I think that fits exactly with what people have been finding via the dreaded eye test: fantastic jumps, routes and glovework mitigating a lower maximum range, and a consistency in breaking the right way and not turning outs into hits.

 

[joe dokes]

In the first half, the Red Sox had the second-best bullpen ERA (3.08) and the third-best bullpen FIP (3.55) in the American League.

Yet only two relievers from that bullpen made the ALDS roster.
*not counting 2 IP from Maddox and 1 IP from EdRo.

*That* is remarkable.

 

[ponch73]

So far here I don't believe anyone has posted any other metric showing JBJ to be an above average center fielder.
The argument that the general level of center field play has improved may be valid. But I don't think there's any way to evaluate a center fielder's value to his team, except in comparison to other center fielders.

What about video evidence that has been posted on the site before?

https://www.nytimes.com/2016/10/02/magazine/can-new-technology-bring-baseballs-data-revolution-to-fielding.html?_r=0

 

[charlieoscar]

His (JBJ's) arm seems to be another weapon that even other great CF's don't seem to have.

He has a strong arm but its accuracy sometimes leaves something to be desired. I think sometimes he tries to throw too hard and pulls it off line.