A review of 2,871 Opening Days — and the seasons that followed

Relatively few Americans care anymore, but Thursday is baseball’s Opening Day. For fans like myself, baseball’s annual return plays a role not dissimilar to the role of the equinox in prehistoric days: a celebration of rebirth, of spring, of a glimmer of positivity after a long stretch of pessimism. It is one of the few days during the year, too, when it is still possible for the New York Yankees to go 0-and-162, as they deservedly should.
History suggests they won’t. In fact, history suggests that they’re likely to win their first game of the season (a day early, against the San Francisco Giants on Wednesday).
See, because my schedule is rather light these days, I decided to see whether the first day of the baseball season actually told us anything. Using the game-by-game data available at Retrosheet, I pulled each franchise’s Opening Day record for as far back as they have been playing ball. The result was necessarily mottled; at least in the era of electric lights, when one team wins on Opening Day, another team has to lose.

The longest stretch a team has gone in winning their first games of the year is ten seasons, a record held by both the Astros (2013 to 2022) and the Braves (1887 to 1896).
At the time, the Braves were the Boston Beaneaters. And that pattern of Opening Day victories didn’t last; over the history of the franchise, the Braves have lost more Opening Day games than they’ve won. That’s true of 13 other major league franchises as well. The worst Opening Day winning percentage, though, belongs to the Royals.
The best? The Amazin’ New York Mets.

Of course, there’s a difference between how a team fares on Opening Day and how it fares in its first home game of each season. Just as Opening Day necessarily means that one team wins and one loses, it also means that one team is at home and one is on the road. If we look at how the teams have done in their home-stadium openers, the results are a bit better.

When looking at each franchise’s first home games, the win record jumps to 11 straight seasons — an accomplishment achieved, I regret to inform you, by the 1998 to 2008 New York Yankees.
In fact — and I really regret to inform you of this — the Yankees have the best overall record in first home games of any franchise.

Again, franchises usually have had more wins in their first home games than their first games of the season because home-field advantage is a thing. But that’s not universally true. Some franchises, like the Dodgers and Reds, have better Opening Day records than first-game-of-the-season records.
I was curious whether Opening Day could actually tell us anything about how the rest of the season is likely to go. And what I found was … well, kind of.
On average, teams that win their first games of the year go on to win more than half of their games in a season. Teams that lose their first games of the year go on to win less than half of their games in a season, on average.
In the past decade, that’s been more pronounced: the gap between first-game winners and first-game losers was 4 points of winning percentage over the course of the season, compared to about 2.5 points over the history of the game.
This isn’t because winning the first game of the season puts teams on an unswerving path toward victory; the season is 162 games long, for God’s sake. Instead, it simply suggests that teams that win the first game are probably better than other teams, which shakes out over the course of the season. That’s reflected in the difference between road and home wins to start the season: Teams that win on the road on Opening Day have higher season-long win percentages on average than in any other scenario.
Above, I was looking at average win percentages — a look at how many games teams won, on average. If we look instead at winning seasons, we see a sharper division. When teams won the first game of the season over the past decade, they’ve gone on to have a winning season about 60 percent of the time. When they lose the first game, that frequency drops below 40 percent.

You are probably wondering (as I did) how the eventual champions did on Opening Day. You will perhaps not be surprised to learn that the teams which have appeared in the World Series since 1905 have won the first game of their season about two-thirds of the time. The average overall is about 50 percent (naturally).
There are exceptions. When the Boston Red Sox finally broke their curse in 2004, the not only lost their first game of the season (on the road in Baltimore) but also their first home game of the season (against Toronto five days later). But all of that was in the distant past when they came back from a three-game-to-zero deficit in the American League Championship Series to win and then win the World Series.
The team they beat in the ALCS, you may recall, was the New York Yankees. A team that, that year, also lost on the road Opening Day. And the team the Sox beat in the Series was the Cardinals — who lost on Opening Day at home.
Photo: President Harry S. Truman throws out the first pitch at Griffith Stadium on Opening Day, 1950. (National Archives)
































