Sampson was promoted Wednesday by the Reds, replacing J.J. Hoover in the bullpen.
After seeing the Reds go 15 innings Tuesday, they needed a fresh arm in the bullpen, and Hoover was an easy sacrificial lamb. Sampson has had a good campaign at Triple-A Louisville, posting a 2.06 ERA and 0.979 WHIP with a 58:19 K:BB over 56.2 innings.