The 27-year-old Brubaker has started a career-high 23 games for the Pirates, pitching to a 5.27 ERA/5.23 FIP in 121 1/3 innings. Brubaker may not be considered a long-term piece for Pittsburgh, but he has eaten valuable innings this year and will probably have the opportunity to do so again next season. He has a 23.7 percent strikeout rate, 6.9 percent walk rate, and 43.1 percent groundball rate, all of which are close to league average.
Keller has made 23 appearances out of the bullpen, pitching to a 7.13 ERA/7.62 FIP. The 28-year-old has suffered from wandering command, walking 16.1 percent of batters while only striking out 22.3 percent of opponents.