New Major League Baseball Record – All Home Teams Win
When the Seattle Mariners beat Baltimore 6-5 in 10 innings, it marked the first time all 15 home teams won on the same day.
Viewing every game as a 50-50 proposition independent of all others, STATS figured the odds of a home sweep on a night with a full major league schedule was 1 in 32,768.
STATS said previously the best performance by hosts had been 11-0, accomplished six times — three in the 1800s. The most recent occasion was Sept. 16, 1989.
Cleveland and Miami also needed extra innings to come out on top in their own ballparks. Other winners were: Toronto, Tampa Bay, Kansas City, Minnesota, St. Louis, Arizona, San Diego, San Francisco, the New York Mets, the Chicago Cubs, the Chicago White Sox and the Los Angeles Dodgers.