My vote for replacing Weaver is Mark Montgomery.
2016 – Memphis – 45 1/3 IP, 30 H, 9 BB, 53 K, 0.86 WHIP, 2.18 ERA
This would let Duke get a few more AAA innings and Siegrist get his velocity back.
Montgomery was once heralded as the next David Robertson when he was in the Yankees organization. He always had control issues there, but seems to have gotten a better grasp on it this year in Memphis. He’s a big slider guy with a 91-92 MPH fastball. His lingering shoulder injuries should give us pause though to ever counting on him long-term (much like Siegrist)
Interestingly, we only picked him up out of necessity when Rosenthal went down at the beginning of the year and Tuivailala got called up. At that time, we needed someone to fill his bullpen spot in AAA.