I noticed something peculiar with Smoak. Over the 7 seasons since starting out in 2010, his performance seems to oscillate between below replacement level to above.
Consider:
OPS+ (baseball-reference): 82, 106, 85, 113, 77, 105, 87
wRC+ (fangraphs): 81, 103, 85, 112, 78, 108, 90
fWAR: -0.5, 0.5, -0.6, 0.7, -0.4, 0.6, -0.1
All three metrics are up-down, up-down.....
So maybe they hope the pattern continues and he has a slightly above replacement level season again in 2017?