Betty "Fossey" Weaver-Foss (May 10, 1929 – February 8, 1998) was an infielder and outfielder who played from 1950 through 1954 in the All-American Girls Professional Baseball League.

Fossie, as friends and fans often called her, was a steady and productive hitter, a solid and speedy outfielder, and a skilled defender at first base.

Gifted with a keen eye and a quick swing, she posted a .342 batting average in 498 games, being surpassed only by her younger sister Joanne, who set an all-time record with a .359 mark.

[3] A native of Metropolis, Illinois, Betty began playing sandlot ball with her younger sisters at a very early age.

She won the batting title with a .346 average, and led all hitters with 24 doubles and a robust .471 slugging percentage, 35 points ahead of Sophie Kurys.

She won the Rookie of the Year honors, but missed the All-Star Team in favor of Fern Shollenberger, an outstanding defender at third base who constantly paced the league in fielding percentage and number of double plays turned.

Foss also led the league with 34 doubles and 176 total bases, and tied for first place in home runs (four) with Eleanor Callow and Alice Pollitt.

She also finished fifth in RBI (78), seventh in stolen bases (60) and tied for fourth in runs (77), but again was denied an All-Star spot, this time to Kamenshek, a batting average runner-up in 1950 (.334) and 1951 (.335).

The All-Stars prevailed, 7–6, when Foss scored the eventual winning run on an RBI-single by Doris Sams in the top of the 9th inning.

Previously in the playoffs, the Kalamazoo Lassies dispatched the South Bend Blue Sox in three games and Fort Wayne did the same with the Grand Rapids Chicks.

[9] In Game 1 of the AAGPBL Series, the Kalamazoo Lassies defeated the Fort Wayne Daisies 17–9 behind a four-hit, seven strong innings from June Peppas, who also helped herself by hitting 2-for-4, including one home run.

Pitching star Maxine Kline, who had posted an 18–7 record with 3.23 ERA during the regular season, gave up 11 runs in six innings and was credited with the loss.

Kalamazoo discounted the margin with leadoff homers by Nancy Mudge, Peppas (playing at first base) and Dorothy Schroeder, but the game's outcome was never in doubt.

[9][10][11] Once the league disbanded, Foss joined several other players selected by former Daisies manager Bill Allington to play in the national touring team known as the All-Americans All-Stars.

Besides Foss, the Allington All-Stars included players as Joan Berger, Gloria Cordes, Jeanie Descombes, Gertrude Dunn, Mary Froning, Jean Geissinger, Katie Horstman, Maxine Kline, Dolores Lee, Magdalen Redman, Ruth Richard, Dorothy Schroeder, Jean Smith, Dolly Vanderlip, and her younger sister, Joanne, among others.

With Helen Callaghan winning the title in 1945, the Fort Wayne Daisies amassed six batting crowns to set a league record.

Finally, in 1980, former pitcher June Peppas launched a newsletter project to get in touch with friends, teammates, and opponents, that resulted in the league's first-ever reunion in Chicago, Illinois in 1982.

The association was largely responsible for the opening of a permanent display at the Baseball Hall of Fame and Museum in Cooperstown, New York since November 5, 1988, that honors those who were part of this unique experience.

A League of Their Own itself was inspired by the 1987 documentary of the same title, written and produced by Kelly Candaele, one of the five sons of the aforementioned Helen Callaghan.