Correction:
Brandon Workman has pitched 5.0 innings and allowed one base runner via walk. He did not allow an earned run.
Matt Barnes has pitched 4.1 innings.
So our top 3 relievers Brasier, Workman, and Barnes have pitched 14.1 innings with a combined 4 hits, 2 walks, and no runs allowed. The next trio of Colton Brewer, Hector Velazquez, and Heath Hembree have pitched 18.1 innings and allowed 6 runs, which is still excellent. Thornburg is actually the least effective at this point, with a pedestrian 4.50 ERA.