As a Sophomore (2018)
Made nine appearances with one save ... Had a 6.43 ERA over 14.0 innings pitched with 10 earned runs allowed and 10 strikeouts ... Three of his appearances came in league play as he threw 4.2 innings with three strikeouts ... Did not give up an earned run in his first four appearances (5.1 innings), striking out six and allowing only five hits ... Threw a career-high 3.2 innings at No. 2 Florida (March 24) ... Picked up his first career save by finishing the final three innings against Texas (March 13), allowing only two runs and striking out one ... Notched a career-high three strikeouts in a three-inning outing at San Diego (Feb. 25).
As a Freshman (2017)
Appeared in six games, earning one victory ... Threw 5.1 innings with just four hits allowed and six strikeouts ... Made his debut against Nebraska (March 4) at the Frisco College Classic, throwing 0.2 innings ... Earned first collegiate victory came against Kansas State (April 25) at Kauffman Stadium ... Threw the final inning against the Wildcats, striking out one, to secure the 6-5 win ... Totaled two or more strikeouts in an outing twice (vs. Nebraska - March 4; vs. ULM - March 8) ... His best outing came against ULM, holding the Warhawks hitless over two innings with two strikeouts on 21 pitches.
Francis Howell High School
Ranked as the No. 222 right-handed pitcher and a top 500 recruit according to Perfect Game ... Ranked as the No. 2 right-handed pitcher and the No. 11 overall recruit in the state of Missouri ... Named 2016 Rawlings-Perfect Game All-America honorable mention and Central second team All-Region ... Named 2015 Perfect Game Underclassman High All-America honorable mention ... Selected to the 2016 Class 5 MHSBCA All-State First-Team ... 2016 All-Metro Pitcher of the Year ... Posted a 10-1 record with a 0.56 earned run average and struck out 92 batters compared to 32 walks in 62.1 innings ... Helped lead Francis Howell to a 29-11 record and a Missouri Class 5 state championship in 2016 and a 29-11 record and a Missouri Class 5 state runner-up finish in 2015 ... Played summer and fall ball for the St. Louis Pirates Elite ... Played for head coach Tony Perkins at Francis Howell High School.
Personal
Son of Greg and Kathy Kostyshock ... Has one sister, Kaitlin ... Chose Arkansas because it was not too far from home and is a great program all around ... Majoring in business.
Made nine appearances with one save ... Had a 6.43 ERA over 14.0 innings pitched with 10 earned runs allowed and 10 strikeouts ... Three of his appearances came in league play as he threw 4.2 innings with three strikeouts ... Did not give up an earned run in his first four appearances (5.1 innings), striking out six and allowing only five hits ... Threw a career-high 3.2 innings at No. 2 Florida (March 24) ... Picked up his first career save by finishing the final three innings against Texas (March 13), allowing only two runs and striking out one ... Notched a career-high three strikeouts in a three-inning outing at San Diego (Feb. 25).
As a Freshman (2017)
Appeared in six games, earning one victory ... Threw 5.1 innings with just four hits allowed and six strikeouts ... Made his debut against Nebraska (March 4) at the Frisco College Classic, throwing 0.2 innings ... Earned first collegiate victory came against Kansas State (April 25) at Kauffman Stadium ... Threw the final inning against the Wildcats, striking out one, to secure the 6-5 win ... Totaled two or more strikeouts in an outing twice (vs. Nebraska - March 4; vs. ULM - March 8) ... His best outing came against ULM, holding the Warhawks hitless over two innings with two strikeouts on 21 pitches.
Francis Howell High School
Ranked as the No. 222 right-handed pitcher and a top 500 recruit according to Perfect Game ... Ranked as the No. 2 right-handed pitcher and the No. 11 overall recruit in the state of Missouri ... Named 2016 Rawlings-Perfect Game All-America honorable mention and Central second team All-Region ... Named 2015 Perfect Game Underclassman High All-America honorable mention ... Selected to the 2016 Class 5 MHSBCA All-State First-Team ... 2016 All-Metro Pitcher of the Year ... Posted a 10-1 record with a 0.56 earned run average and struck out 92 batters compared to 32 walks in 62.1 innings ... Helped lead Francis Howell to a 29-11 record and a Missouri Class 5 state championship in 2016 and a 29-11 record and a Missouri Class 5 state runner-up finish in 2015 ... Played summer and fall ball for the St. Louis Pirates Elite ... Played for head coach Tony Perkins at Francis Howell High School.
Personal
Son of Greg and Kathy Kostyshock ... Has one sister, Kaitlin ... Chose Arkansas because it was not too far from home and is a great program all around ... Majoring in business.