He 's 8 - 5 with a 2.98 ERA , and was the winning pitcher on Friday in Washington .
Hammel , signed to a one - year contract as a free agent , has been a revelation this season .
Hammel 's 8 - 5 with a 2.98 ERA , and was the winning pitcher on Friday in Washington .
Hammel , signed to a one - year contract as a free agent , has been a revelation this season .