This is not an overreaction to his tough blown save last night (Hays absolutely should have called Gunnar off on that pop up), but I did not see closer stuff from Kimbrel last night.
His fastball is down 2.7 MPH from last year when it was the lowest average velocity of his career up until then. He got zero whiffs on his 92.2 to 93.8 MPH fastball and batters were able to foul it off even when he was able to hit his spots.
The lack of command of his knucklecurve could have been the rust of not pitching since Mar 20th in a game, but he only threw one for a strike and got one whiff on a chase by Bobby Witt on the K.
Now the only good news is that I looked over his career and he traditionally throws slower in Mar/Apr and then ramps up by May, but the bad news is as far as I can see, that's the slowest average velocity that he's ever thrown in a big league game.
Now let's add in the fact that he couldn't hold a runner to save his life last night allowing that bloop single to turn into a triple. As was noted in the game thread, neither could 6-foot-8 Bautista, but Bautista of course have an otherworldly strike out rate and he actually got better at holding runners through the year last year.
Now maybe Kimbrel will improve, but let's be honest here, there is no way anyone is going to feel secure with him coming in and pitching in one run games for the save right now.