Katherine Keller Katherine Keller played for the Twins in the Ponytail American League of the 2005 Slow-Pitch Softball Season (5/1/2005 - 6/30/2005) for girls aged 8 - 10 on 9/1/2005 (born 9/2/1994 - 9/1/1997). Katherine Keller has also played for: Twins, Ponytail Division Slow-Pitch Softball, 2006 Season. Katherine's Twins Page Express, Ponytail Division Volleyball, 2005 Season. Katherine's Express Page