Here are the highest OPS numbers posted, since 1916, by a major league team over a full calendar month (min. 750 PAs):
1. Yankees (June, 1930) 1.035 OPS
2. Cardinals (April, 2000) .959 OPS
3. Red Sox (June, 2003) .945 OPS
4. Indians (April, 1997) .942 OPS
5. Indians (July, 1936) .940 OPS
6. Mariners (May, 1999) .935 OPS
7. Giants (June, 2000) .932 OPS
8. Cardinals (July, 1928) .931 OPS
9. Yankees (May, 1936) .929 OPS
10. Yankees (July, 1927) .925 OPS
In June of 1930, the Yankees’ most common batting order was
Earl Combs (OF) 1.197 OPS that June
Lyn Lary (SS) .541 OPS that June
Babe Ruth (OF) 1.477 OPS that June
Tony Lazzeri (2B) .986 OPS that June
Lou Gehrig (1B), 1.501 OPS that June
Harry Rice (OF) .903 OPS that June
Bill Dickey (C) 1.093 OPS that June
Ben Chapman (3B) .936 OPS that June
Sam Byrd (“Babe Ruth’s Legs”) and Dusty Cooke were the fourth and fifth outfielders on this club. Byrd (career .762 OPS) put up an 1.177 OPS that June, while Cooke’s June, 1930 OPS was 1.109 (compared to a .728 career OPS). Lyn Lary broke his thumb on June 20 (see Lary’s bio at SABR) and was replaced in the lineup mostly by guys who didn’t hit any better than he did. Amazing that the Yankees let Lary and his replacements spend the month batting second in the order. Note that the Yankees skipper that season, Bob Shawkey, was new to managing, having replaced Miller Huggins who had sickened and died suddenly late in the 1929 season at the age of 50.
The Yankees offense average an astounding 9.3 runs a game that June. They had a win-loss record of 20-8 that month, and ended the day on June 30 with an 42-25 record for the season, though that was still 2 games behind the Athletics. But over their first 8 games of July, they averaged only 2.5 runs per game, went 1-7, fell to 6 and a half games out of first and never really recovered. They finished 3rd in the AL, behind Philadelphia and Washington. It was the only season between 1926 and 1939 that the Yankees finished lower than second, and Bob Shawkey was replaced as manager after one season by Joe McCarthy.
As many HHS readers will know, 1930 was the highest-scoring season in modern major league history. Many of us will remember the huge hitting years of 1999-2000 when run scoring averaged about 5.1 runs per game per season, but then imagine 1930 when run scoring in the majors averaged over 5.5 runs a game. The Yankees in June that season represent the perfect storm of team hitting: the biggest hitting team, in the biggest hitting season, on its biggest hitting roll of all.