"The post season is, IMHO, all about pitching and shutting down the other team's offense."

This. Dead right Tec.

Really?  Then explain this guy:

<a style="color:black;" href="http://www.whatifsports.com/hbd/Pages/Popups/PlayerProfile.aspx?pid=2579522" target="_blank">Royce Tannehill</a>

Career regular season: 211-69, .753 winning pct, 1.14 WHIP, 3.10 ERA
Career playoffs (23 starts) 4-14, .222., 1.48, 6.69

Apparently, he doesn't shut down the other team's offense in the post-season.

Yeah, that will leave a mark.

When I set my post season rotation, I always check the game logs and see how each starter did Vs the team I'm playing in the regular season. Things seem to repeat themselves in HBD. If I do start a guy and he gets crushed the first time around I will not send him out again in the series, agian, because things tend to repeat themselve in HBD. Amp Sauer is not that great of pitcher but he did really versus the Tanker3000 team The Dodgers in the regular season. He shut them down in the first game and since HBD tends to repeat themselves I put him out there on short rest to take the series even though he was not at 100%. I could do that because he was no good versus the other teams playing and I was not going to use him much in the series so his % didn't mean much.

I just try to play to my teams stregths, like most, and take advantage of the other teams weak spots. If they can't hit lefthanded pitching I'll try to get my southpaws going up an extra time. My post season record is also not so great but I win a few and lose a few.

I don't think you can or should try to derive anything meaningful out of the results of one or two single games in the course of a particular season.  It's a small sample size.

If you have a starting pitcher who went through the entire season throwing 220 IP with a .234 OAV and 1.17 WHIP, but in the one game he pitched against a particular team he went 4.1 IP and 7 ER, you really can't infer that he's "owned" by that team.  That's just random variation.  I'll take the larger sample of results over the entire season as more representative of likeliness of future performance.

I agree with the SSS but I have just seen, in my own postseason games, if a pitcher gets hit the first time around he will be hit the second time around. It is, I'm sure, just my horrible luck. To me, the postseason is a coinflip and but I still look for any advantage I can get. Though playing .500 ball in the post season is far from an ideal result.

I'd sell my left nut for a .500 post-season record.

Well I am 6-2 in my current post season trip, so I'm sure the sweep will be coming in the ALCS.