Texas Tech Red Raiders Tadlock joined the Red Raider coaching staff as the associate head coach under
Dan Spencer prior to the 2012 season. Following the firing of Spencer in 2013, Tadlock was promoted to the head coaching position.
2013 season The 2013 season saw the program's first series win over the
Texas Longhorns in
Austin, Texas, since 2001 and broke school records in both
fielding percentage and double plays. The Red Raiders would complete the season with a 26–30 overall record.
2014 season The 2014 season began with a 4–1 series win over the then #3
Indiana Hoosiers. Texas Tech would go on to finish the regular season with a 40–16 record, earning a berth in the Coral Gables Regional of the
2014 NCAA Division I baseball tournament, the first NCAA tournament appearance by the Red Raiders since 2004. The Red Raiders would go on to win the Coral Gables Regional, defeating the
Columbia Lions in the opening game and host
Miami Hurricanes two games to one. Texas Tech would be the first team since 1992 to pitch 3 straight NCAA tournament shutouts. The Coral Gables Regional championship earned the Red Raiders their first Super Regional appearance and hosting in
Lubbock Super Regional against the
College of Charleston Cougars. The Red Raiders would win two straight 1–0 games, the fewest runs scored ever since the Super Regional format was introduced in 1999. The Lubbock Super Regional championship earned the Red Raiders their first
College World Series berth in program history. The season was also marked by tying a school record in home wins (33), and breaking a school record with 9 shutouts. The Red Raiders pitching staff's
earned run average of 3.17 marked the lowest since 1974.
2015 season Losing much of their talent Tadlock's Red Raiders struggled to find any traction in 2015. The team struggled during the 2015 season although they were ranked #15 in the coaches poll entering the season. The Red Raiders finished with a disappointing 30–22 record and a mediocre 13–11 in the Big 12.
2016 season Entering the season unranked by college baseball publications, Tadlock produced one of the best teams in Texas Tech baseball history. Predicted to finish 5th in the Big 12 prior to the 2016 season, Tadlock would lead the Red Raiders to a Big 12 Conference regular season championship with a 40–14 overall record and a 19–5 conference record. The 19–5 record represented the 4th best win percentage in conference history, earning Tadlock a contract extension through 2022 and $100,000 raise. Tadlock was named the Big 12 Coach of the Year and player
Eric Gutierrez won Big 12 Player of the Year. Tadlock would lead the Red Raiders to the 2016
College World Series, the program's second overall appearance and the second under Tadlock by winning the Lubbock Regional and Lubbock Super Regional. ==Head coaching record==