The Cardinals have won championships ranging from the conference level up to the national level. At the national level, the Cardinals won the NAIANational Championship in Singles and Doubles in 1955, 1956, 1957, 1958. The Cardinals also won the NAIA singles championship in 1959, and 1960. At the NCAA College Division level, the Cardinals won the National Singles Championship in 1967. The Cardinals won a NCAA College Division Regional Championship in both Singles and Doubles 1962. At the NCAA Division I level, the Cardinals have won three Southland Conference tournament championships and have represented the Southland Conference in the NCAA Division I Men's Tennis tournament in 2016, 2017, and 2018. The Cardinals also won the Southland Conference regular season championship at the NCAA College Division level ; at the NCAA Division II level ; and at the NCAA Division I level.
The Lamar Lady Cardinals tennis team is the women's team representing Lamar University in the sport of tennis. The team started competition around 1968. The Lady Cardinals compete in NCAA Division I's Southland Conference. Home matches are at the 16 court on campus Thompson Family Tennis Center in Beaumont, Texas. David Wong has been the Lady Cardinals' head coach since the 2001 season. The team competed with the Association of Intercollegiate Athletics for Women until 1981 when it began competition as an NCAA Division I team. In AIAW competition, the doubles team of Cathy Beene and Linda Rupert won the National AIAW Doubles championship in 1973. Beene and Rupert also captured four Texas AIAW Singles championships and two Texas AIAW Doubles championships. In NCAA competition, the Lady Cardinals have won two Southland Conference championships, one Southland Conference tournament championship, and one American South Conference championship.
Note: Overall is misstated since it is based only on available records. Records for at least seven seasons of the program beginning are unavailable.
Stadium
The Thompson Family Tennis Center was completely renovated in 2009. The center has 16 outside courts including 5 stadium courts with covered seating for 400. Additional seating for over 600 spectators is provided for the remaining eleven courts. The center features an electronic scoreboard capable of scoring six matches at once. The tennis support building includes a pro shop/meeting room, locker rooms, restrooms, and storage room.