Born in La Mirada, California, Jennie has been playing softball since she was five years old and has been pitching since she was eight. At La Mirada High School, Finch lettered four times in softball, and twice each in both, basketball and volleyball. (As a senior, she was the captain of all three sports.) As a sophomore, she was an All-CIF Div. II choice in softball and an All-Suburban League selection.

Jennie played softball for The University of Arizona. She was a three-time All-American pitcher and first-baseman and Honda Award winner for the Player of the Year as a member of the Wildcat softball team. Her jersey number -- #27 (the date of her parents' first date) -- was retired by the University of Arizona on May 9, 2003 at Hillenbrand Stadium.

She recorded 24 wins in her freshman season; 29 wins in her sophomore season; 32 wins (and no losses) in her junior season to set a NCAA record; and 24 wins in her senior season, to amass a career total of 109 victories which were the 12th most at the time. She has since been passed by Alicia Hollowell, Monica Abbott, Cat Osterman, Keira Goerl, Brooke Mitchell, Jamie Southern, and Kristen Schmidt, and tied by Jessica Salinger.

She also struck out a total of 1,028 batters, the 23rd most at the time. She has since been passed by Cat Osterman, Alicia Hollowell, Monica Abbott, Jennie Ritter and Stephanie VanBrakle.

She married Arizona Diamondbacks pitcher Casey Daigle on January 15, 2005 at the Crystal Cathedral in Garden Grove, California.

Finch and Daigle welcomed a son on May 4, 2006. After an induction because Finch was overdue, Ace Shane Daigle was born in Tucson, Arizona. About two weeks after the couple began dating in 2002, Daigle told Finch that he always wanted to name his first son Ace.

Finch came to prominence when she defeated Anna Kournikova in an ESPN online poll as the most attractive female athlete. She has appeared on various talk shows promoting softball and the US Olympic Team, and also hosts a segment on This Week in Baseball. Her TWIB segment often features her pitching to major-league baseball players, using a softball and pitching from the same distance she would in a softball game. Finch usually strikes out the baseball players; her fastball of 71 mph is equivalent to a fastball of nearly 100 mph in baseball, where the pitcher's rubber is about 20 feet farther away than in softball.

Finch was offered a lucrative contract to appear nude for men's magazine Playboy, but commented to the press on August 14, 2004 that such an offer wasn't going to tempt her. She commented that she'd "rather be a role model for young girls." She said that muscles on women are beautiful, but my personal decision is to stay away from those things; to stay away from that."

Finch currently pitches for the Chicago Bandits of the National Pro Fastpitch Softball League[1]. She was named the NPF's Co-Pitcher of the Year in 2005, sharing the award with teammate Lauren Bay.