After graduating from
Crestwood High School in Dearborn Heights, Aleta joined the PWBA in the summer of 1980, with grandparents Steve and Adeline agreeing to pay her tournament entry fees that season. She entered her first pro tournament in August of that year, the Stroh Light Classic in
Rochester, Michigan, and finished 11th. After a heartbreaking second-place finish at the Stardust Classic in 1981 (a total pins event which she lost 9,439–9,435 to
Donna Adamek), 19-year old Aleta won the season's next tour stop, the Gallery of Homes Classic in
Los Angeles, for her first professional title. While struggling through a winless 1982 season, Aleta began to question if she should continue a career as a professional bowler. Those questions were put to rest when she won her second title and first major championship at the 1983
WIBC Queens. She won a second title in 1983 at the Dallas-Fort Worth Classic, and was the Tour's leading money winner that season. In between these two 1983 titles, Aleta Rzepecki married David Sill and became known as Aleta Sill. Her career really took off in 1984, when she won five titles, including a major at the Sam's Town LPBT Tournament of Champions, and was voted by her peers as the 1984 Player of the Year. She was also named Bowler of the Year in both 1984 and 1985 by the Bowling Writers Association of America (BWAA). The 1985 season saw her win three titles, including her second WIBC Queens crown. After she won only one title between 1990 and 1992, Sill's career resurged. She won 13 titles between 1993 and 1998 to reach the 30-title plateau, including two wins in the
U.S. Women's Open major (1994 and 1998). The 1998 victory made Sill the first bowler, male or female, to win her sport's triple crown twice (two WIBC Queens titles, two U.S. Open titles and two Sam's Town Invitational titles). The feat was eventually matched on the men's
PBA Tour by
Pete Weber in 2013. Aleta won the Merit Mixed Doubles Championship three times in four years (1993, 1994 and 1996) with three different partners. Sill's final title was earned at the 2000 Greater Atlanta Open. She retired from professional bowling after the 2001 season, having won 31 titles, just one shy of the PWBA record set by
Lisa Wagner two years earlier. In addition to her PWBA accolades, Sill won five titles in the WIBC (now USBC) Open Championships. She won all-events titles in 1982 and 1985, a singles title in 1983, and a team title in 1995. Ten years after her PWBA career ended, she won the USBC Open Doubles title with
Michelle Feldman in 2011. She is one of a very few women to have a title in all four WIBC/USBC Open categories. Sill says she has rolled "35 or 36"
perfect 300 games, including one at a 1984 tournament that she listed as one of her top bowling memories. "My first 300 game [was] bowled in
Dallas, Texas in 1984. I won a white
Mustang convertible. Now that was great!" Sill is a member of eight halls of fame, including the PWBA Hall of Fame (inducted 1996), the USBC Hall of Fame (inducted in 1996), the National Polish-American Sports Hall of Fame (inducted 2008) and the Michigan Sports Hall of Fame (inducted 2015). ==Later career==