1. My bad on Houck vs. Crawford--I believed today's OP. Of course, we might also see Houck in relief today.
2. Your insistence that Houck and/or Whitlock should have been closing from day one flies in the face of Cora's demonstrated ability to get the most out of his pitching staffs, including his bullpens. You and TylerD both seem to think he's an idiot.
3. Both Houck and Whitlock have demonstrated they are good at long relief and even at starting. As I keep reminding you, the rules of MLB allow opposing teams to score in any inning, not just the 9th. The value of Houck and Whitlock was/is the ability to throw more than one inning in relief--and even more as starters.
4. Neither Whitlock nor Houck has demonstrated an ability to close--mostly, I quite agree, because Cora wants to use them differently. Nevertheless, we did see Houck close Friday night, and I think he was more lucky than good: 22 pitches needed, plus he gave up a hit and a hard hit out.
4. Last year for, what, half a season, we saw what a real closer looked like--Barnes with his mammoth knuckle curve alternating with that upper 90's fastball. Before last year, Barnes used a bigger repertoire and was middling successful as a reliever. But once that knuckle curve got good, he just needed those two pitches to get 3 guys out when needed. In 2013 Koji Uehara had a slow fastball (87 mph?), a nasty splitter, great command, and the guts of a cat burglar. In the 2018 regular season Kimbrel used basically what Barnes did last year--a great knuckle curve and high velocity fastball (even faster than Barnes's last year). Nobody, but nobody on this team reminds me of Barnes when he was good, Kimbrel, Uehara, Papelbon, et al.
5. Robles has closed successfully in the past. Whatever he is throwing has been reasonably effective this season--except when he is closing.