Tim Chastonay has been the head coach of the Bellarmine University men’s soccer team since 1998 and is the winningest coach in program history along with being the longest-tenured coach in all of Bellarmine athletics.

Chastonay will enter his 26th season in 2023.

After coming close its first two seasons in the NCAA's highest level, Bellarmine in 2022 achieved a winning record (6-4-8) for the first time in the Division-I era. The Knights earned a berth in the ASUN Championship semifinals for the third consecutive season after defeating Stetson in PKs in the quarterfinals. Four players garnered ASUN All-Conference laurels.

The fall 2021 campaign saw Bellarmine win its first-ever game in the ASUN Championship as the Knights rallied to defeat FGCU 2-1 in the quarterfinals. Bellarmine spent five weeks in the Atlantic Region rankings. Three Knights were honored with ASUN All-Conference awards.

The spring of 2021 marked Bellarmine's first season in Division I and the ASUN Conference, and Chastonay and his squad wasted no time in making their mark. The Knights secured the top seed from the North Division in the ASUN Championship after going 3-1 in league play. Bellarmine finished the season ranked No. 9 in the Atlantic Region by the United Soccer Coaches. Chastonay was voted ASUN Coach of the Year after guiding his team to a memorable inaugural D1 campaign that included four All-Conference acknowledgements and an All-Region laurel (Jonas Skulstad).

Prior to Bellarmine's arrival in DI, Chastonay built a 208-164-41 record over 22 seasons in Division II. He amassed over 120 victories more than the program's next winningest coach. Chastonay led Bellarmine to a Great Lakes Valley Conference Tournament berth in 12 of the last 13 years in D2, the final one of which ended with the Knights hoisting the championship trophy and sealing a bid in the NCAA II Tournament. All five of Bellarmine's D2 All-Americans (Ross Hopkins, Brad Barraclough, Tomas Bernedo, Micah Linscott, Eddie Williamson) have been produced during Chastonay's tenure.

The 2019 campaign, the last in D2, marked the most successful in program history for Bellarmine, which did not lose a match until the Sweet 16 of the NCAA II Tournament. The Knights went 16-1-5 overall and 10-0-4 in the GLVC. Both win totals set new program records. Along with an undefeated regular season, Bellarmine captured the GLVC Tournament title following a 3-2 victory over McKendree and secured its first-ever NCAA II Tournament berth. The Knights built a 30-game unbeaten streak bridging the 2018 and 2019 seasons and finished the year with a No. 13 national ranking. Bernedo, Linscott and Williamson earned All-America accolades from the D2CCA, and Bernedo became the program's first GLVC Offensive Player of the Year.

Bellarmine finished 12-5-2 in 2018. At the time, the Knights tied both the most overall wins and the most conference victories (nine) in program history. Bellarmine finished second in the league and earned the No. 2 seed in the GLVC Tournament, where the Knights advanced to the finals. Skulstad became the program's first GLVC Defensive Player of the Year honoree.

In 2017, Chastonay's Knights tied a then-program record with nine GLVC wins. Bellarmine's 11 overall victories were one shy of the program record at the time. The biggest highlight of the season came when Bellarmine defeated second-ranked and Final Four-bound Rockhurst, 2-1. Williamson was named GLVC co-Freshman of the Year.

From 2009-12, the Knights posted double-digit wins in every season. Bellarmine had one of its best seasons ever in 2012 as Chastonay's Knights went 10-5-3 overall and 9-3-3 in the GLVC. In 2010, Bellarmine finished 10-5-2 and the Knights achieved a No. 18 national ranking. That season came on the heels of an 11-win campaign in 2009 and, two years before that, the Knights tied a then-program record with 12 wins. Hopkins became the program's first All-American in 2009 after garnering second-team honors from Daktronics. Hopkins and Barraclough both reaped All-America recognition in 2010.

Chastonay, who was voted GLVC Coach of the Year in 2005, also led Bellarmine’s women’s program as the head coach (1998-09) for 12 seasons, guiding the program to its first-ever appearance in the NCAA II Tournament in 2009. 

Prior to coming to Bellarmine, Chastonay was a successful high school coach in Louisville at Eastern High School. He spent four seasons at the lead of the Eagles soccer team, where he compiled a 71-19-2 record including winning the 1996 Kentucky state championship and finishing the season ranked nationally in the top 25. For his accomplishments that season, he was named the KHSAA Soccer Coach of the Year.

A 1993 Bellarmine graduate, Chastonay was a four-year member of the soccer team, where he helped lead the Knights to a GLVC runner-up finish three times. As a senior, he was named to the All-GLVC team and also received Bellarmine’s Silver Knight award for athletic achievement and sportsmanship. After his collegiate career, Chastonay spent one season playing semi-pro soccer for the Louisville Thoroughbreds of the USISL.

Chastonay in 2017 was inducted into the Kentucky Youth Soccer Association's Hall of Fame as part of the Javanon '81 team that he coached to the 1997 USYSA National Championships title. He was recognized as the KYSA's Boys Select Coach of the Year in 2008 and 2017.

Chastonay lives in Louisville with his wife, Kelli, and they have two children, AJ and Ryan.