The 2015 BYU Cougars baseball team represented Brigham Young University in the 2015 NCAA Division I baseball season. Mike Littlewood acted in his 3rd season as head coach of the Cougars. For the second consecutive year BYU was picked to finish sixth in the WCC Pre-season rankings. After using three stadiums last season, the Cougars played all of their home games at Larry H. Miller Field. The Cougars surpassed expectations in the 2015 season. BYU won 7 of their 9 conference series (losing series only at San Diego and at Pacific), claimed the 3-seed in the WCC Tournament, and lost 0 home series for the season. The Cougars went 0–2 in the WCC Tournament, losing both games in the ninth inning, to finish the season 28–25, 16–11 in conference play.
2015 Roster 2015 BYU Cougars Roster Pitchers 6 James Lengal – Senior 9 Mason Marshall – Sophomore 11 Kolton Mahoney – Junior 17 Wyatt Padget – Junior 18 Brady Corless – Junior 23 Hayden Rogers – Sophomore 24 James Barker – Freshman 25 Jeff Barker – Senior 26 Riley Gates – Freshman 27 Michael Rucker – Sophomore 29 Brandon Kinser – Senior 32 Maverick Buffo – Freshman 36 Blake Brailsford – Freshman 37 Keaton Cenatiempo – Sophomore 41 Austin Kamel – Junior 42 Seth Huxford – Freshman Infielders 5 Hayden Nielsen – Junior 7 Parker Starr – Senior 8 Dillon Robinson – Senior 10 Brian Hsu – Freshman 12 Tanner Chauncey – Sophomore 13 Bret Lopez – Senior 21 Paxton Larson – Freshman 22 Dallen Reber – Junior 43 Derrick Whitney – Junior Catchers 14 Bronson Larsen – Sophomore 16 Jarrett Jarvis – Senior 35 Colton Shaver – Freshman 39 Grant Hodges – Freshman
Outfielders 2 Brennon Lund – Sophomore 3 Andy Isom – Senior 4 Eric Urry – Junior 19 Court Iorg – Freshman
Schedule
! style="background:#FFFFFF;color:#002654;"| Regular season
|- align="center" bgcolor="ffbbb" | February 13 || at #16 UC Santa Barbara || – || Caesar Uyesaka Stadium || None || 1–8 || Justin Jacome (1–0) || Kolton Mahoney (0–1) || None || 411 || 0–1 || – |- align="center" bgcolor="ffbbb" | February 14 || at #16 UC Santa Barbara || – || Caesar Uyesaka Stadium || None || 0–6 || Dillon Tate (1–0) || Hayden Rogers (0–1) || None || 340 || 0–2 || – |- align="center" bgcolor="ffbbb" | February 14 || at #16 UC Santa Barbara || – || Caesar Uyesaka Stadium || None || 1–3 || Shane Bieber (1–0) || Jeff Barker (0–1) || James Carter (1) || 380 || 0–3 || – |- align="center" bgcolor="ffbbb" | February 16 || at #16 UC Santa Barbara || – || Caesar Uyesaka Stadium || None || 4–5 || Domenic Mazza (1–0) || Brady Corless (0–1) || James Carter (2) || 305 || 0–4 || – |- align="center" bgcolor="ffbbb" | February 19 || vs. Nebraska || – || Peoria Sports Complex || None || 3–6 || Jeff Chesnut (1–0) || Mason Marshall (0–1) || Josh Roeder (2) || 930 || 0–5 || – |- align="center" bgcolor="ccffcc" | February 20 || vs. Nebraska || – || Peoria Sports Complex || None || 8–3 || Jeff Barker (1–1) || Chance Sinclair (1–1) || None || 1,150 || 1–5 || – |- align="center" bgcolor="ffbbb" | February 20 || vs. Nebraska || – || Peoria Sports Complex || None || 1–3 (11) || Colton Howell (1–1) || Michael Rucker (0–1) || Josh Roeder (3) || 1,150 || 1–6 || – |- align="center" bgcolor="ffbbb" | February 21 || vs. Nebraska || – || Peoria Sports Complex || None || 1–9 || Zack Engelken (1–0) || Brady Corless (0–2) || Jake Meyers (1) || 1,914 || 1–7 || – |- align="center" bgcolor="ffbbb" | February 26 || vs. Oklahoma || – || Cashman Field || None || 6–7 || Jacob Evans (1–0) || Keaton Cenatiempo (0–1) || None || 100 || 1–8 || – |- align="center" bgcolor="ccffcc" | February 27 || vs. Oklahoma || – || Cashman Field || None || 4–3 || Michael Rucker (1–1) || Keaton Hernandez (0–1) || None || 125 || 2–8 || – |- align="center" bgcolor="ffbbb" | February 27 || vs. Oklahoma || – || Cashman Field || None || 2–3 || Jacob Evans (2–0) || Brandon Kinser (0–1) || None || 125 || 2–9 || – |- align="center" bgcolor="ffbbb" | February 28 || vs. Oklahoma || – || Cashman Field || None || 1–7 || Adam Choplick (1–1) || Maverik Buffo (0–1) || None || 150 || 2–10 || –
|- align="center" bgcolor="ccffcc" | March 5 || Hartford || – || Larry H. Miller Field || TheW.tv || 6–0 || Kolton Mahoney (1–1) || Kyle Gauthier (1–2) || None || 803 || 3–10 || – |- align="center" bgcolor="ccffcc" | March 6 || Hartford || – || Larry H. Miller Field || TheW.tv || 8–6 || Riley Gates (1–0) || Justin Robarge (0–1) || Michael Rucker (1) || 825 || 4–10 || – |- align="center" bgcolor="ccffcc" | March 6 || Hartford || – || Larry H. Miller Field || TheW.tv || 20–4 || Brandon Kinser (1–1) || Jacob Mellin (0–1) || None || 825 || 5–10 || – |- align="center" bgcolor="ccffcc" | March 7 || Hartford || – || Larry H. Miller Field || TheW.tv || 11–7 || Keaton Cenatiempo (1–1) || Sam Mckay (2–1) || None || 817 || 6–10 || – |- align="center" bgcolor="ccffcc" | March 10 || at Utah Valley || – || Brent Brown Ballpark || YouTube || 10–7 || Brady Corless (1–2) || Jake Mayer (0–2) || None || 2,213 || 7–10 || – |- align="center" bgcolor="ffbbb" | March 12 || Pepperdine* || – || Larry H. Miller Field || BYUtv || 3–11 || Jackson McClelland (3–1) || Kolton Mahoney (1–2) || None || 919 || 7–11 || 0–1 |- align="center" bgcolor="ccffcc" | March 13 || Pepperdine* || – || Larry H. Miller Field || BYUtv || 5–3 || Keaton Cenatiempo (2–1) || A. J. Puckett (2–3) || Michael Rucker (2) || 1,357 || 8–11 || 1–1 |- align="center" bgcolor="ccffcc" | March 14 || Pepperdine* || – || Larry H. Miller Field || BYUtv || 6–5 (10) || Michael Rucker (2–1) || Max Gamboa (1–1) || None || 1,541 || 9–11 || 2–1 |- align="center" bgcolor="ccffcc" | March 19 || at Gonzaga* || – || Patterson Complex || TheW.tv || 6–5 || Kolton Mahoney (2–2) || Calvin Lebrun (2–3) || None || 517 || 10–11 || 3–1 |- align="center" bgcolor="ffbbb" | March 20 || at Gonzaga* || – || Patterson Complex || TheW.tv || 6–7 || Sean-Luke Brija (1–1) || James Lengal (0–1) || David Bigelow (4) || 391 || 10–12 || 3–2 |- align="center" bgcolor="ccffcc" | March 21 || at Gonzaga* || – || Patterson Complex || TheW.tv || 13–4 || Brandon Kinser (2–1) || Andrew Spoko (2–3) || None || 568 || 11–12 || 4–2 |- align="center" bgcolor="ffbbb" | March 24 || at Utah || – || Smith's Ballpark || P12 Mtn || 3–9 (6) || Dylan Drachler (2–2) || Brady Corless (1–3) || None || 1,367 || 11–13 || – |- align="center" bgcolor="ffbbb" | March 26 || at San Diego* || – || Fowler Park || TheW.tv || 1–7 || David Hill (5–2) || Kolton Mahoney (2–3) || None || 857 || 11–14 || 4–3 |- align="center" bgcolor="ffbbb" | March 27 || at San Diego* || – || Fowler Park || TheW.tv || 3–19 || PJ Conlon (4–1) || Jeff Barker (1–2) || None || 881 || 11–15 || 4–4 |- align="center" bgcolor="ffbbb" | March 28 || at San Diego* || – || Fowler Park || TheW.tv || 4–13 || CJ Burdick (2–1) || Brandon Kinser (2–2) || None || 654 || 11–16 || 4–5 |- align="center" bgcolor="ccffcc" | March 30 || at #29 San Diego State || – || Tony Gwynn Stadium || MW Net || 4–0 || Michael Rucker (3–1) || Brett Seeburger (0–1) || None || 329 || 12–16 || –
|- align="center" bgcolor="ccffcc" |April 2 || Portland* || – || Larry H. Miller Field || BYUtv || 3–2 || Kolton Mahoney (3–3) || Brandon Snyder (0–3) || Michael Rucker (3) || 725 || 13–16 || 5–5 |- align="center" bgcolor="ffbbb" |April 3 || Portland* || – || Larry H. Miller Field || BYUtv || 3–6 || Kurt Yinger (1–5) || Jeff Barker (1–3) || Carl Snaring (2) || 1,773 || 13–17 || 5–6 |- align="center" bgcolor="ccffcc" |April 4 || Portland* || – || Larry H. Miller Field || TheW.tv || 9–3 || Michael Rucker (4–1) || Davis Tominaga (1–5) || None || 812 || 14–17 || 6–6 |- align="center" bgcolor="ccffcc" |April 7 || Utah Valley || – || Larry H. Miller Field || BYUtv || 15–6|| Brandon Kinser (3–2) || Patrick Wolfe (1–4) || None || 1,344 || 15–17 || – |- align="center" bgcolor="ccffcc" |April 9 || at Loyola Marymount* || – || George C. Page Stadium || LMUSN || 5–3 (12) || Keaton Cenatiempo (3–1) || J.D. Busfield (2–1) || Michael Rucker (4) || 362 || 16–17 || 7–6 |- align="center" bgcolor="ccffcc" | April 10 || at Loyola Marymount* || – || George C. Page Stadium || TheW.tv || 4–2 || Brandon Kinser (4–2) || Trevor Megill (2–3) || Michael Rucker (5) || 478 || 17–17 || 8–6 |- align="center" bgcolor="ffbbb" | April 11 || at Loyola Marymount* || – || George C. Page Stadium || LMUSN || 2–8 || Sean Watkins (3–0) || Brady Corless (1–4) || None || 391 || 17–18 || 8–7 |- align="center" bgcolor="ffbbb" | April 13 || at Cal State Northridge || – || Matador Field || None || 8–10 || Conner O'Neil (3–2) || Kolton Mahoney (3–4) || None || 203 || 17–19 || – |- align="center" bgcolor="ccffcc" | April 21 || Utah || – || Larry H. Miller Field || BYUtv || 7–6 || Brandon Kinser (5–2) || Bret Helton (2–6) || Michael Rucker (6) || 1,848 || 18–19 || – |- align="center" bgcolor="ccffcc" | April 23 || San Francisco* || – || Larry H. Miller Field || BYUtv || 14–4 || Kolton Mahoney (4–4) || Anthony Shew (6–4) || None || 1,361 || 19–19 || 9–7 |- align="center" bgcolor="ccffcc" | April 24 || San Francisco* || – || Larry H. Miller Field || BYUtv || 6–5 (10) || Mason Marshall (1–1) || Travis Ulstead (1–2) || None || 1,199 || 20–19 || 10–7 |- align="center" bgcolor="ccffcc" | April 25 || San Francisco* || – || Larry H. Miller Field || TheW.tv || 3–2 (10) || Mason Marshall (2–1) || Christian Cecilio (5–2) || None || 1,160 || 21–19 || 11–7 |- align="center" bgcolor="ccffcc" | April 28 || at Utah Valley || – || Brent Brown Ballpark || YouTube || 5–2 || Brady Corless (2–4) || Jake Mayer (1–5) || Keaton Cenatiempo (1) || 4,240 || 22–19 || – |- align="center" bgcolor="ffbbb" | April 30 || at Pacific* || – || Klein Family Field || TheW.tv || 3–4 || Jake Jenkins (3–6) || Kolton Mahoney (4–5) || Vince Arobio (7) || 456 || 22–20 || 11–8
|- align="center" bgcolor="ffbbb" | May 1 || at Pacific* || – || Klein Family Field || TheW.tv || 6–11 || Sean Bennetts (1–6) || Brandon Kinser (5–3) || None || 863 || 22–21 || 11–9 |- align="center" bgcolor="ccffcc" | May 2 || at Pacific* || – || Klein Family Field || TheW.tv || 6–4 (11) || Mason Marshall (3–1) || Vince Arobio (1–1) || None || 445 || 23–21 || 12–9 |- align="center" bgcolor="ffbbb" | May 7 || Saint Mary's* || – || Larry H. Miller Field || BYUtv || 5–14 || Johnny York (7–4) || Kolton Mahoney (4–6) || None || 846 || 23–22 || 12–10 |- align="center" bgcolor="ccffcc" | May 8 || Saint Mary's* || – || Larry H. Miller Field || BYUtv || 17–1 || Brandon Kinser (6–3) || Corbin Burnes (6–5) || None || 1,037 || 24–22 || 13–10 |- align="center" bgcolor="#CCCCCC" | May 9 || Saint Mary's* || – || Larry H. Miller Field || BYUtv ||colspan=7 align=center| Cancelled due to weather- Will be made up May 18 |- align="center" bgcolor="ccffcc" | May 12 || at Utah || – || Smith's Ballpark || P12 || 16–6 || Keaton Cenatiempo (4–1) || Nolan Stouder (0–5) || None || 4,108 || 25–22 || – |- align="center" bgcolor="ccffcc" | May 14 || at Santa Clara* || – || Stephen Schott Stadium || Santa Clara Portal || 8–5 (10) || Mason Marshall (4–1) || Josh Inouye (2–1) || None || 230 || 26–22 || 14–10 |- align="center" bgcolor="ffbbb" | May 15 || at Santa Clara* || – || Stephen Schott Stadium || Santa Clara Portal || 7–8 || Max Kuhns (1–0) || Kolton Mahoney (4–7) || None || 373 || 26–23 || 14–11 |- align="center" bgcolor="ccffcc" | May 16 || at Santa Clara* || – || Stephen Schott Stadium || Santa Clara Portal || 4–2 || Michael Rucker (5–1) || Steven Wilson (3–4) || Mason Marshall (1) || 280 || 27–23 || 15–11 |- align="center" bgcolor="ccffcc" | May 18 || y-Saint Mary's* || – || Louis Guisto Field || TheW.tv || 4–3 (10) || James Lengal (1–1) || David Dellaserra (2–4) || None || 91 || 28–23 || 16–11 |- align="center" bgcolor="ffbbb" | May 21 || vs. Pepperdine* || – || Banner Island Ballpark || TheW.tv || 7–8 || Max Gamboa (5–2) || Mason Marshall (4–2) || None || 789 || 28–24 || – |- align="center" bgcolor="ffbbb"