David Robertson gave up 5 ER in 0.2 innings on June 1st, blowing a save against the Twins in spectacular fashion. Everybody threw up their hands, cried to the heavens, and called for him to be ousted as closer so that Dellin Betances, the new Mariano Rivera, could be ushered into his rightful spot on the throne.
Funny thing, D-Rob has picked up right where he left off before that bad outing. You know, when he was dominating the American League with his curveball and striking out anything with a pulse and a bat in its hand. He's made 5 appearances since the last blown save, converted 4 straight save opportunities, and has given up no runs, 2 hits, and 2 walks in 4.2 IP over that stretch while striking out 9 of the 18 batters he's faced.
That gives D-Rob 41 Ks in 22.2 IP for the season, a cool 43.6% K rate that's nipping at the heels of the almighty Betances. Since the start of May, he's struck out 36 of the 72 total batters he's faced, a perfectly even 50.0% K rate. The lesson, as always, is don't worry about D-Rob.