Hancock has a pretty huge dropoff in underlying numbers home/away. Normally I wouldn't read too much into these type of stats but Seattle is the most pitcher friendly park in MLB.
Home - 3.50 FIP, 3.30 xFIP, 3.49 xERA, 26% K-rate, 5% BB-rate
Away - 4.58 FIP, 4.61 xFIP, 4.65 xERA, 18% K-rate, 6% BB-rate