I'd also like to touch on the Cubs being historically great at LOB%. For one, they don't give up base runners or hits... period. They should be great at LOB%. When you don't allow guys to get hits, that means they can't drive in runs either. It's not as crazy as it looks. Of course they are stranding runners: Those runners only got on base because of a fluke. They were lucky to be on base, not unlucky to not score. The driving force behind the LOB number is the Cubs' ability to limit all offensive production. Teams are less likely to get on base when there are no outs when they face the Cubs. And they are also less likely to get on base when runners are on base. Good teams have higher LOB% than bad teams. And this is taking everything into account: the pitching staff being great at non-BABIP things, them being great at suppressing BABIP, the defense, all of it. Teams are hitting .207 against Cubs pitching (the next-lowest team being at .228). Of course teams are going to suck at hitting when guys are on base, too. We should expect the LOB% to be extremely high, because they are historically great at everything... in every scenario. This is the main reason for the historically high LOB%. He talks about the Cardinals from last year in this article: They were considerably better with runners on base. This was the driving force for their LOB%. They weren't really elite at limiting production with runners not on base. Taken as a whole, Cardinals pitching ranked 11th in WHIP last year. They were 7th in batting average against. They were 5th in FIP. 10th in xFIP. 11th in total team defense (DEF). They were a good, maybe very good, pitching staff. But they weren't historically great or anything. They weren't even close to being the best at limiting overall production in the league that year. The Cubs are historically great at limiting all production. Their non-ball-in-play production has been excellent. And they are historically great at suppressing BABIP -- through limiting hard contact and having a historically great defense. This is why they are so good with runners on base. They are historically great at LOB%. They aren't historically lucky. This is an important distinction. The Cardinals were historically lucky last year. Their fluky results with runners on base are why they were historically great. That's not the case with us. The Cubs have probably been a little lucky with runners on base, though. He points out that the opponents have a wOBA of .274 with the bases empty and .276 with runners on against the Cubs. It's close -- nearly identical. Most teams aren't that close. They haven't exactly been historically lucky in this regard, though. More just... a little lucky probably. But, let's look into that a little more, also. Why do teams fare worse with RISP? Well, there are a couple of reasons. For one, some guys struggle to pitch out of the stretch. Michael Pineda and Robbie Ray, for example, have had some troubles with this. It's a big reason why they've performed worse than their FIPs would indicate. Also, if you look at who's hitting with runners on base most often, you wouldn't be shocked to find that middle-of-the-order hitters are batting. Guys at the top of the order get on base more often, so guys in the middle of the order have more RISP opportunities. But, those aren't the main reasons. The biggie is this: Look at who is pitching with RISP. Who is pitching the most -- out of starting pitchers -- for the Giants with runners on? It's not Madison Bumgarner. He's not allowing runners to even get in scoring position. It's Matt Cain and Jake Peavy. The Giants are going to look better with no runners on, because when no runners are on, that means Madison Bumgarner is pitching. And they'll look worse with runners on, because that means Matt Cain is pitching. They don't perform that much worse in these situations, it's just that their shitty pitchers are taking up more of the sample. So, let's look at the Cubs. They've pretty much had the same five guys starting all year, save for a Mike Montgomery start here or there. And all five have limited offensive production at incredible levels. Take our top four starters: They rank 1st, 3rd, 4th, and 5th in batting average against, of all qualified starters in the major leagues. These guys have pitched nearly 55% of our total innings this year. So, if you just randomly pull out a RISP opportunity, you are likely to find a pitcher on the mound who has been one of the five best in the league at limiting hits. That's why we fare nearly the same with runners on base. We always have a great pitcher on the mound with an historically great defense behind them. We don't have a Matt Cain artificially inflating our RISP numbers. Our Matt Cain is Jason Hammel, who ranks 26th in the majors, with a .233 batting average against. So, sure, we've probably been a little lucky. Look no further than Travis Wood somehow turning into Clayton Kershaw whenever the bases are loaded, while being Travis Wood the rest of the time. But, that's only happened like twice this year. The larger reason why we don't give up more hits with RISP is because when we have runners in scoring position, Arrieta, Hendricks, Lester, Lackey, Rondon, Strop, or Chapman are most likely on the mound.