With their 7-2 loss to the Cubs in 11 innings at Miller Park on Monday night, the Brewers fell out of first place in the NL Central for the first time since May 12, while Chicago — which has gone an NL-best 21-10 since May 6 — claimed its first share of the lead since May 1. While it’s not quite as extreme as what’s going on atop the AL West, this battle for first place is another one where differing success in one-run games has helped one team keep pace despite a significantly inferior run differential:
NL Central Leaders
Team |
W-L |
WPct |
Run Dif |
1-Run W-L |
WPct |
Other W-L |
WPct |
Cubs |
38-25 |
.603 |
89 |
6-10 |
.375 |
32-15 |
.681 |
Brewers |
39-27 |
.591 |
37 |
15-7 |
.682 |
24-20 |
.545 |
The Brewers have the majors’ fourth-best winning percentage in one-run games, and the second-highest win total behind only the Mariners’ 21. The Cubs, meanwhile, have the majors’ ninth-lowest winning percentage in one-run games, and are tied with the Astros and White Sox for the fifth-lowest win total in that category. (Remarkably, there were no one-run games in the majors on Monday night, so this table is a rerun save for my virtual highlighter.)
Records in One-Run Games
Tm |
W -L |
WPct |
Yankees |
11-3 |
.786 |
Braves |
10-4 |
.714 |
Mariners |
21-9 |
.700 |
Brewers |
15-7 |
.682 |
Red Sox |
12-6 |
.667 |
Rockies |
10-5 |
.667 |
Angels |
12-7 |
.632 |
Phillies |
10-6 |
.625 |
Pirates |
11-7 |
.611 |
Athletics |
11-7 |
.611 |
Padres |
8-6 |
.571 |
Cardinals |
10-8 |
.556 |
Tigers |
12-10 |
.545 |
Diamondbacks |
11-10 |
.524 |
Indians |
10-10 |
.500 |
Giants |
9-9 |
.500 |
Blue Jays |
7-7 |
.500 |
Rangers |
7-7 |
.500 |
Dodgers |
7-9 |
.438 |
Nationals |
7-10 |
.412 |
Royals |
8-13 |
.381 |
Cubs |
6-10 |
.375 |
Marlins |
5-9 |
.357 |
Rays |
9-17 |
.346 |
Mets |
7-14 |
.333 |
Astros |
6-12 |
.333 |
Orioles |
5-10 |
.333 |
White Sox |
6-14 |
.300 |
Reds |
5-12 |
.294 |
Twins |
3-13 |
.188 |
SOURCE: Baseball-Reference
So how have the Brewers managed to stay so close to the Cubs? As noted in Monday’s Mariners piece, success in one-run games has a lot to do with sequencing, random variance, and luck. Extreme records in one-run games are prone to regression, though in recent years the 2016 Rangers (36-11, .766) and 2012 Orioles (29-9, .763) have posted the two highest winning percentages in such games since 1901. Bullpen performance has an outsized effect on a team’s record in such games, because managers have more control on when to deploy their best relievers in high-leverage spots than they do with regards to their best hitters because of the way that batting order works. Via FiveThirtyEight’s Rob Arthur, there’s a significant correlation (r = .28) between bullpen WAR and winning percentage in one-run games, and it just so happens that the Brewers own the NL lead in that category (3.5 WAR), though the Cubs rank third (2.6) — and, now that you mention it, the teams ranked second through sixth in bullpen WAR through Sunday (the Padres, Nationals, Giants and Diamondbacks being the others) were a combined 41-45 in one-run games.
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