Post-up for playmaking, not scoring
It's actually interesting that what we have seen is teams using the post more for playmaking than specifically for scoring. Posting up isn't automatically more efficient than a perimeter isolation. There was a time when teams just assumed that posting up was good and better and every big man possible would be given post-up isolations, but what you find is a lot of guys shooting about 44-45% with a decently high turnover rate on their post-ups. That's not efficient offense.
What some teams have adjusted to is that teams many times opposing teams double on post players, so those teams use the post to draw the defense in a get open shots. We see this with a PG like Kidd who really was not a huge scoring threat in the post, but opposing teams would double him, and he was really just interested in passing out of the post.
Wings > Bigs?
What you also see is a lot of teams posting up with long or skilled wing post-up players and surrounding them with big men who can shoot. Many times that is actually better because they are better shooters and passers, since they are going against guys their own size, the post-up is just as or more effective, and since their big is out on the perimeter, they are many times taking away the oppositions best rebounder and shot blocker from being as close to the basket.
There are actually few big men in the league who are very effective in a straight up post isolation (Dirk, LaMarcus, West, Gasol Kobe, Durant, etc).
Shaq isn't the norm
Blake isn't a beast like Shaq type post player, and he doesn't have an excellent jump-shot, so with that, there is a limit on how effective his straight up post-isolation can be unless he's excellently skilled in the post, and he isn't, though not bad as people make it seem, actually fairly good.
Barkley and Shaq are huge strong guys. Their idea of a post-up is catching the ball really close, or backing a guy down because they are just much stronger. What they fail to take into account is that if many of these guys are forcing post stuff, it means turn-around jumpshots, not power moves going to the basket.
Perimeter iso can be > Post iso
For example, for the Clippers, a Chris Paul isolation is the most effective isolation play, followed by a Jamal Crawford isolation. Blake isolating in the post is not as effective as those guys breaking down their defenders and isolating. What you would want to create our of Blake isolations is open shots by drawing the defense. Interestingly enough, a mid-post face-up isolation attacking the middle of the defense actually does a better job at consistently drawing defenses if they aren't going to automatically double.
Pick your spots
Where you want Blake posting up is off a reversal where he gets a seal or good position on his man and is within 5 feet of the basket. When he's further away you'd prefer him to attack facing the defense with an eye for finishing or creating an open shot.
Did recent teams have post bigs?
Just want to comment on Dirk, Bosh and Gasol. Dirk is actually a GREAT mid-post player. He might be one of the most effective post-up players in the league because his jumpshot goes in half the time. He's extremely efficient there because he's an insane shooter, and he can also face up and drive or draw a foul. He's not a low-post player, he's a mid-post player. Post is about efficiency and drawing defenses, not really about just beating people up near the basket, and if a guy can make as many shots in mid-post and be consistent, it is just as effective as low post.
Gasol was a really good post-player when LAL won. Bosh doesn't post up in Miami, but he does spread the floor for Lebron being used as a post-player.
Last year via Synergy: PPP / FG% / Foul Draw / TO%
Chris Paul isolation:
0.99 | 43.2% | 6% | 7.6%
Arranged by PPP
1.02 | 50% | 7.0% | 8.8%
0.96 | 43.7% | 9.9% | 7.3%
0.95 | 46.4% | 9.1% | 8%
0.95 | 47.3% | 11.6% | 10.7%
0.94 | 47.6% | 6.9% | 9.4%
0.93 | 46.3% | 9.7% | 10.5%
0.92 | 46.2% | 8% | 9.1%
0.91 | 44.2% | 11.2% | 9.7%
0.89 | 44.9% | 7.3% | 8.4%
0.88 | 47.6% | 12.9% | 20.2%
0.88 | 46% | 7.7% | 12%
0.87 | 42.2% | 11.2% | 12.2%
0.85 | 43% | 11.6% | 11.6%
0.85 | 45.5% | 8.3% | 11.6%
0.84 | 40.8% | 9.5% | 11%
0.84 | 43.7% | 6.6% | 12.6%
0.83 | 41.5% | 7.4% | 10.5%
0.83 | 42.4% | 6.2% | 12%
0.82 | 43.3% | 7.1 % | 17.1%
0.82 | 48.1% | 6.4% | 23.7%
0.82 | 41.2% | 11.3% | 14.3%
0.81 | 49.6% | 13.3% | 13.8%
0.81 | 41.8% | 10.1% | 15.9%
0.78 | 41.2% | 8.9% | 14.3%
0.74 | 44.5% | 15.1% | 18.2%
1.05 | 55.3% | 12.8% | 14.2%
1.04 | 51.8% | 10.9% | 13.4%
0.95 | 47.4% | 11.8% | 11.1%
0.92 | 43.2% | 12.6% | 11.1%
0.89 | 43.6% | 10.4% | 7.8%
0.85 | 39% | 11.1% | 8.2%
Pau Gasol wasn't healthy and neither was Howard, they are better in healthy years.
This isn't best post moves, it is most effective post players, if you have nice moves but never draw fouls, or turn it over too much, you aren't effective
PPP = Point per play
A majority of the top guys have a TOV% <10
Some players PPP looks weird in comparison to their foul draw and TOV%, but remember that if you have a high foul draw rate, you still need to make those FT's, so a good FT shooter also gets increased effectiveness in the post because they are getting more points per post play that they are fouled. A really bad FT shooter (DJ) for example get's a decrease because 38% FT is actually only 0.76 PPP.
Dirk and DJ are the only players that shot ~50% in post-up situations, and DJ would actually be higher in the effectiveness (/PPP) list if he made his FT's because he has a 13.3% foul draw rate, but the shooting of his FT's (38% = 0.76) brings down his PPP
Chris Paul is more effective running an isolation play than every big man but Dirk is at posting up
Blake Griffin was the 11th most effective post-up player out of the big men listed.
Blake would actually be quite high up there if he was an 80% FT shooter like most of those guys are
The top wing players are more effective in the post than the top big men, Durant for example because he has big man length and is guarded by wings and is a great shooter, and Kobe because of a combination of tons of post skill and great shooting ability
We see a pattern that the best guys in the post are those who are long and can also shoot and that a beast post player like Shaq or Barkley who both also had great length and strength, and Barkely could also shoot. Those players are an anomaly, not the rule.