Davis worked in the energy industry for forty years, until he retired as the CEO of ETP and ETE in 2007.
[5] When the Rangers were put up for sale in 2010, Davis joined a group headed by Chuck Greenberg and Nolan Ryan, which purchased the club.
[4] Davis and Simpson became co-chairmen of the Rangers, but remained mostly behind the scenes as senior consultants while allowing Greenberg and Ryan to operate the team as CEO and president, respectively.
[6] Following Ryan's resignation from the Rangers in 2013, MLB approved the Rangers' request to have Davis replace Ryan as the team's control person, thus making him the primary person accountable to the commissioner's office for the team's operations.
On November 1, 2023, the Rangers defeated the Arizona Diamondbacks in five games to win the 2023 World Series, giving Davis his first championship.