"It's a great opportunity, and that's something Joe told me before he took off," Hynes said.
Hynes, who was promoted from Triple-A Tucson on July 14, hasn't pitched much at this level yet (5 1/3 innings entering Saturday), but he has retired five of the six left-handed batters he's faced with one walk and one strikeout.
"He's become our left-handed everything," Padres manager Bud Black said of the team's lone lefty in the bullpen. "But we have confidence in Colt in that he can get a tough left-handed hitter out."
That's something Thatcher had become very good at. Lefties were hitting just .212 against him in 2013. In seven seasons with the Padres, left-handed batters had a .209 average in 345 at-bats.
Hynes believes he can handle the job, and after adjusting his mechanics in Spring Training, he now throws from a lower arm slot -- a three-quarters delivery that offers deception to left-handed batters.
"I've heard [from hitters] that there's some deception in it," Hynes said. "For me, personally, it's easier to repeat my delivery that way and throw more quality strikes."
Corey Brock is a reporter for MLB.com. Keep track of @FollowThePadres on Twitter. Jamal Collier is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.