TERRE HAUTE, Ind. – Indiana State head softball coach Windy Thees announced the addition of both Mikka Spence and Kailee O'Sullivan to the 2026-27 roster as the duo will join the Sycamores for the upcoming season.
 
Spence joins the Sycamores by way of Gibbons, Alberta, Canada after transferring into Indiana State by way of Galveston College. The right-handed pitcher lined up and played in two games at Galveston in the 2026 season posting a 2.28 ERA while also earning a spot on the Academics President's List.
 
Prior to her time at Galveston, Spence lined up and played at Sturgeon Composite High School and for the Team Alberta and Kaizen travel teams. Over her prep career, she recorded a .458 batting average, a .538 on-base percentage, and a 1.78 ERA. She also received the Merit's Award and the Sportsmanship Awards, while also competing on the volleyball and flag football teams. She is the daughter of Warren and Mona Spence and plans on majoring in biology at Indiana State.
 
O'Sullivan joins the Sycamores by way of Plainfield, Ill., after transferring into Indiana State following two years at Fairleigh Dickinson University. Over her playing career at FDU, she posted a career .335 batting average with team-leading 24 doubles, three triples, and four home runs, while adding 64 RBIs and 45 runs scored.
 
This past season, she posted a .307 batting average over 45 games played, including 11 doubles and two home runs, while sitting second on the FDU roster with 28 RBIs. Her freshman season, O'Sullivan earned All-NEC Second Team and All-Rookie honors after posting a .356 batting average and a team-high .527 slugging percentage highlighted by 13 doubles, three triples, and two home runs, while driving in 36 RBIs.
 
O'Sullivan was a decorated prep player earning All-State and All-Conference recognition at Providence Catholic High School, earning GCAC Red Conference Player of the Year honors. She was ranked the No. 39 player as a utility player for the class of 2024 by Extra Innings Softball and made the 2024 PGF All-American Games Watch List. She is the daughter of James and Priscilla O'Sullivan and plans on majoring in applied medicine/nursing at Indiana State.
 
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