2025 Softball Roster

Angela Kelm
Olivia Zinanni
Angela Kelm
Michael McLoone

16 Kiarra Kostroski

16 Kiarra Kostroski

  • Position:
    Utility
  • B/T:
    R/R
  • Class:
    Senior
  • Hometown:
    Fort Atkinson, Wis.
  • High School:
    Fort Atkinson

Summary

Biography

2025 (Senior): WIAC All-Conference First Team ... NFCA All-Region Second Team ... CSC Academic All-District ... All-Region Second Team ... Single Season Record for Most Walks (31) ... Recorded 42 runs, 46 hits, and 36 RBIs in 47 games ... Achieved an OPS of 24 with 10 doubles and 7 home runs ... Hit 2 triples and stole 4 bases ... Tallied 31 walks, breaking the single season drawn walks record ... Maintained a perfect fielding percentage with 245 putouts and 17 assists ... Notable series against Wis.-River Falls: 3 runs, 2 hits, 1 HR, 1 RBI ... Went 3-for-3 with a double and 3 runs against Carroll on March 27 ... Hit a home run and drove in 3 runs versus Wis.-Platteville on April 22 ... Season-high OPS of 3.500 with 4 runs, 2 hits, and a home run against Geneseo on March 20 ... Contributed 2 runs, 2 hits, and a triple against Springfield on March 17 ... Recorded 3 RBIs with a double against Salem St. on March 18 ... Hit a home run and drove in 2 runs against Fredonia on March 18 ... Season-high 2.417 OPS with a double and a triple against Chicago on April 23 ... Recorded a home run and 3 RBIs in a 9-3 win against Wis.-La Crosse on April 26 ... Totaled 8 series of multi-hit games ... Participated in every team game this season.

2024 (Junior): CSC Academic All-District ... WIAC Kwik Trip Position Athlete of the Week (April 1-7) ... All-Region Third Team ... WIAC All-Conference First Team ... played 42 games ... recorded 34 runs, 48 hits, and 26 RBIs ... hit 11 doubles, 7 home runs, and 2 triples ... walked 16 times and struck out 10 times ... achieved an OPS of 28 ... in the series against Elmhurst on April 14, scored 3 runs and hit 1 home run in a 5-0 win, then added 2 RBIs in a 7-0 win ... against Wis.-Stevens Point on May 1, hit a home run with 2 RBIs in a 4-2 victory ... notched a home run and 2 RBIs against Wis.-River Falls on May 3 in a 9-4 win ... in the series against Rockford on April 25, combined for 2 runs and 3 hits, including a double, in 13-7 wins ... posted 3 runs and 3 hits, including a home run, in a 11-7 win over Hamilton on March 18 ... season-high OPS of 4.000 in a 5-0 win against Elmhurst on April 14 ... accumulated 57 putouts and 6 assists with no errors in the field.

2023 (Sophomore): Recorded 38 appearances in the 2022-23 season ... Hit three home runs and nine doubles ... Registered 37 hits and 22 RBI ... Walked 15 times and struck out 16 times ... Achieved a season-high OPS of 2.500 in a win against Wis.-Oshkosh (April 22) ... Scored two runs and hit a home run with three RBI in the same game ... Accumulated a .833 OPS in the series against Coe (May 19-20), including two hits and one run in a win ... Recorded a triple and an RBI against Southern Me. (March 19) ... Went 2-for-4 with a home run and three RBI against Ill. Wesleyan (April 23) ... Posted perfect fielding in 139 putouts with 11 assists ... Threw out three of 18 attempted base stealers ... Named to the WIAC All-Conference First Team.

2022 (Freshman): Appeared in 39 games, all as a starter … tied for fourth in the Wisconsin Intercollegiate Athletic Conference in triples (3), tied for seventh in home runs (4) and walks (14), and tied for eighth in at-bats (117) … batted .291 (34-for-117) with seven doubles, 20 runs scored and 18 runs batted in … finished with 53 total bases, two-hit-by-pitches, one sacrifice hit and two stolen bases … slugging percentage of .453 and on-base percentage of .376 … fielding percentage of .976 … posted two hits and one RBI in the Warhawks’ 6-4 win against Rhodes (Tenn.) on March 18 in Clermont, Fla. … smashed a two-run homer against Western New England on March 18 in Clermont, Fla. … tallied one hit, one walk, one run scored and one RBI against New York University on March 19 in Clermont, Fla. … reached base twice with one walk and one hit-by-pitch and scored two runs in UW-Whitewater’s 10-1 victory against William Paterson (N.J.) on March 19 in Clermont, Fla. … tripled and knocked in one run in the Warhawks’ 8-0 triumph against Washington and Jefferson (Pa.) on March 20 in Clermont, Fla. … collected one triple, one stolen base, one run scored and one RBI in UW-Whitewater’s 11-3 win against Middlebury (Vt.) on March 23 in Clermont, Fla. … finished 2-for-4 with one double, one run scored and one RBI in the Warhawks’ 7-4 victory against Buffalo State on March 23 in Clermont, Fla. … doubled, walked and scored one run in UW-Whitewater’s 5-1 triumph against Williams (Mass.) on March 24 in Clermont, Fla. … totaled four hits, two runs scored and six RBIs in the team’s doubleheader split at UW-Platteville on April 6 … doubled and walked against UW-River Falls on April 9 … finished 2-for-3 with one double, one walk and one run scored in the Warhawks’ 1-0 win against Carthage on April 21 … tallied one hit, one walk and two runs scored in UW-Whitewater’s 6-3 victory at Chicago on April 23 … combined for four hits, including one double and one home run, and added two walks, two runs scored and four RBIs in the team’s doubleheader sweep against Carroll on April 27 … walked, singled and drove in one run at UW-La Crosse on May 2 … amassed three hits, including one triple, and added two walks, one run scored and one RBI in the team’s doubleheader sweep at UW-Eau Claire on May 3 … doubled twice against UW-Oshkosh in the WIAC Tournament on May 7 in La Crosse, Wis.

Personal: Majoring in mathematics ... parents are Terri Palm-Kostroski and Kevin Kostroski ... is a recipient of the Warhawk Exceptional Academics scholarship ... competed in volleyball and softball at Fort Atkinson High School, where she was a two-time all-conference selection, including once as a unanimous first team honoree, and team Most Valuable Player in softball and a recipient of the academic award ... career ambition is to work in mathematics/finance ... chose to attend UW-Whitewater for its location, for the facilities, for the campus and to continue her softball career
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Historical Player Information

  • 16

    2022Freshman

    Utility
    5'5"
    16
  • 16

    2023Sophomore

    Catcher/Outfield
    5'5"
    16
  • 16

    2024Junior

    Utility
    5'5"
    16
  • 16

    2025Senior

    Utility
    5'5"
    16