Coach David Collenback graduated from Winston Churchill High School in San Antonio in May of 1979 where he lettered in football, basketball, and baseball. He continued his education at Trinity University where he earned his Bachelor of Science degree in 1984 and lettered in both football and baseball. In 1991, he received his Master of Science degree from Texas A & I University in Kingsville. He has taught middle school science and physical education as well as coached football, basketball and track. He also taught at Edison High School in the San Antonio Independent School District and Marshall High School in the Northside Independent School District. In May 2019, after 21 seasons at O’Connor High School, Coach Collenback announced his retirement after compiling 441 wins, 19 playoff appearances and 10 district championships.
He has been the only head baseball coach at O’Connor High School. He has coached 3 professional baseball players, 4 players have been drafted; 15 all-state players, (8 selected to play in the South on the Texas High School Baseball Coaches Association North/South All-Star Game), 23 academic all-state players, 2 All-American players, and many all-city and all-district players. Selected by Capital One Bank for the High Yield Coach of the Year award, Coach Collenback was also named San Antonio Express News 2013 Coach Of The Year and led The Panthers to the 5A state semifinals at Dell Diamond in Round Rock.
Coach Collenback is on the selection committee to choose the state THSBCA All-Stars as well as running the Junior combine in San Marcos for the THSBCA. He is currently the Vice President of the SAABCA.
He is a member of the Texas High School Coaches Association, Texas High School Baseball Coaches Association, Trinity University Alumni Association and the Texas A & M Kingsville Alumni Association. Additionally, he has two articles published in the Texas Coach Magazine of the Texas High School Coaches Association and has coached the 1993 South team of the Texas High School Coaches Association football game held on the TCU campus in Fort Worth, TX. Since 1998, he has coached the West in the annual Valley Hi Baseball All Star Game held a V.J. Keefe Stadium on the campus of St. Mary’s University. He created a Northside Independent School District web site called “Food Fight” for the Health and Physical Education departments. He also created the grading policy for the Physical Education Foundation’s course in the same district. Last, but not least, he’s listed in the 2005 edition of “Who’s Who of American Teachers”.