As a head coach, of coaches with a minimum of 185 games, Silas has the worst record of all time. He went 59-177, .250 winning pct. with the Rockets. This year, the Rockets are at a respectable .500 (yes I am aware this level of FA spending didn't happen during any of the Silas years and players like Sengun have improved considerably (though part of that is player development too)). But in 3 seasons with the Rockets, a young ascending team, the team meagerly improved each year (17 wins to 20, to 22). To further counter the rebuttal of the depleted roster argument, even with Harden on the team for those first 9 games of 2020-21, the Rockets were 3-6, (0.333) despite going 0.611 the previous year.
Countering another rebuttal, the minimum 185 games seems a bit cherry-picked, but even if you bring it to a minimum of 100 games, he has the 4th worst record of all time, and the the 3 worse than him have an average sample of only 148 games to his 236, a big difference of 88 games, more than a whole extra season to prove yourself.
But I am not finished. What's another team with a horrible recent record? The Pistons, coached by Monty Williams.
Monty Williams, over the same 3 seasons with the Suns, went 160-76 (yes with a great roster), a win pct. of .678. Well, this year, the Pistons, in the midst of a 16 game losing streak, didn't win a single game in November, and are are 2-17 overall, .105, which is even worse than last year's Pistons win pct. of .207, despite gaining Cade Cunningham back and gaining top 4 rookie Ausar Thompson (I know they lost Bojan but Bojan only played 59 games last year and Cade only played 12).
So what's going wrong?
Well have you noticed something? Stephen Silas happens to be an assistant with the Pistons this year.
Obviously, Silas isn't to be pinpointed for the Pistons struggles, he's just an assistant (and you can even make some argument for his time with the Rockets which I hinted at), I just think it's very interesting. Silas is on a historically bad run as a coach and as a bad luck omen, perhaps.
*I have nothing against Stephen Silas. If anything, he seems cool, and might be a good coach, but seeing this level of historical statistical badness, this is too glaring not to point out.
I went and ran the numbers for all the games in his career as an assistant, and Silas did have a fairly respectable record as an assistant for the Mavericks, Bobcats/Hornets, and Warriors from 2006 to 2020, 0.456 win pct, which is why I said bad run, to be specific.
Sources: StatMuse, with the aid of Wikipedia and Basketball-Reference