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CAL STATE SAN MARCOS COUGARS
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2025 Softball Roster

Greg Siller
Greg Siller
Greg Siller
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20 Mackenzie Kestler

20 Mackenzie Kestler

  • Position:
    OF
  • Athletic Year:
    Redshirt Senior
  • Height:
    5-10
  • Hometown:
    Santa Maria, Calif.
  • Previous School:
    Ernest Righetti HS
  • Bats/Throws:
    L/L

Summary

Biography

ACADEMIC AWARDS
  • Big Blue Award (Fall 2023)
  • Cougar Award (Fall 2021)

ATHLETIC AWARDS
  • CCAA All-Tournament Team (2024)
  • 2023 NCAA Division II West Regional All-Tournament Team

AS A SENIOR IN 2025
  • Appeared in 56 games this season with 42 starts.
  • Hit .281 with 38 hits, 20 runs, 17 RBIs, three doubles, 41 total bases, a .659 OPS, .304 slugging percentage and a .355 on-base percentage in 135 at-bats for the season.
  • Went 3-for-3 with two RBIs and one run against Colorado Christian (Feb. 2). 
  • Went 2-for-3 with three RBIs and one run against Western Washington (May 15) in the NCAA Division II West Super Regionals. 

AS A JUNIOR IN 2024
  • Appeared in 54 games this season with 38 starts.
  • Hit .268 with 33 hits, 22 runs, 20 RBIs, one home run, seven doubles, one triple, 45 total bases, a .699 OPS, .366 slugging percentage and a .333 on-base percentage in 123 at-bats for the season.
  • Went 3-for-4 with a double and two runs at Stanislaus State (Feb. 15). 
  • Hit a three-run homer in the 14-6 victory at Cal State San Bernardino (April 12). 

AS A SOPHOMORE IN 2023
  • Appeared in 39 games this season with 30 starts.
  • Made 29 starts in right field and one start as the designated player. 
  • Hit .298 with 28 hits, 10 runs, 17 RBIs, two home runs, five doubles, 41 total bases, a .816 OPS, .436 slugging percentage and a .380 on-base percentage in 94 at-bats for the season.
  • Batted a team-best .448 with a team-leading 13 hits and three doubles in postseason while registering seven RBIs, four runs, a triple, a home run, a .724 slugging percentage and .484 on-base percentage. 
  • Finished the season on a team-best 20-game streak of reaching base safely. 
  • Closed the season out on a nine-game hitting streak (second highest on team) that will carry over to the 2024 season. 
  • Went 4-of-13 with six RBIs, two runs, a double and a home run in the Cal State Monterey Bay road series (April 21-22). 

AS A FRESHMAN IN 2022
  • Appeared in 14 games this season with two starts.
  • Made two starts as the designated player. 
  • Hit .211 with four hits, three runs, four RBIs, one home run, one double, eight total bases, a .632 OPS, .421 slugging percentage and a .211 on-base percentage in 19 at-bats.
  • First collegiate hit was a 2-RBI double in the series opener against Simon Fraser (Feb. 22). 
  • Hit a walk-off home run on a two-out, 3-2 pitch in the Simon Fraser (Feb. 22) nightcap. 
  • Knocked out a RBI single at Cal State Monterey Bay (April 22). 

HIGH SCHOOL
  • A 2020 graduate of Ernest Righetti High School in Santa Maria, California.
  • All-Mountain League first team. 
  • All-Mountain League second team in volleyball. 
  • Received the Scholar-Athlete award all four years in softball and volleyball. 
     
TRAVEL BALL
  • Played for Central California Dirt Dogs. 

PERSONAL
  • Born in Santa Maria, Calif.
  • Daughter of Mike and Linda Kestler
  • Has three older siblings; Vanessa, Mikey and Haley. 
  • Enjoys running, going to the beach and surfing. 
  • Favorite movie is "Surfs Up". 
  • Roots for the San Diego Padres. 
  • Favorite food is pizza. 
  • Greatest influence is her dad. 
  • Favorite CSUSM moment was going to Tennessee for the World Series. 
  • Likes most about CSUSM is the sense of community CSUSM has, the Business program and being in San Diego of course.
  • Majoring in Business Marketing. 
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Stat Snapshot (Season)

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Stat Snapshot (Career)

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Season Stats

Season:
2025
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Career Stats

Career Statistics

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Historical Player Information

  • 20

    2022Redshirt Freshman

    Utility
    5'10"
    20
  • 20

    2023Redshirt Sophomore

    Utility
    5'10"
    20
  • 20

    2024Redshirt Junior

    Utility
    5'10"
    20
  • 20

    2025Redshirt Senior

    Outfielder
    5'10"
    20