While Frazier's BA is low, he's walking more. His OBP has been between .303 and .309 for the last 3 years.
.309 is nothing to be happy about, but it's considerably better than the .255 OBP we have had at 3B season.
We've talked about Pablo's steady decline while at SF, well, Frazier's SLG has declined recently:
.498 in 2015 at age 29
.464 in 2016 at age 30
.411 in 2017 at age 31
The other scary thing about Frazier is that he has been a first half hitter most of his career, and he's way behind his normal numbers at this point of the year.
Career:
1st half .819
2nd half: .721
If we take the .721 number and add the regression factor, his 2nd half of 2017 offensive projection would not look too promising.