Previously, Cash played catcher in MLB for the Toronto Blue Jays, Tampa Bay Devil Rays, Boston Red Sox, New York Yankees, and Houston Astros.

[6] He also appeared in two College World Series (1998, 1999) for Florida State, including a second-place finish in 1999, when he was voted second-team All American at third base by the National Collegiate Baseball Writers Association (NCBWA).

His presence behind the plate, alongside Josh Phelps, led to Jayson Werth moving to the outfield that year.

During his time with the Tennessee Smokies, he hit .277 with eight home runs and a league-leading 44 RBI while also throwing out 42 percent of base runners.

[26] He began the season on the disabled list with a shoulder injury, but returned to the majors in June and hit a home run on the first pitch of his first at-bat.

[34] On September 7, Baltimore Orioles starter Daniel Cabrera threw a pitch near Dustin Pedroia's head.

[36] When Doug Mirabelli was released during spring training, Cash became the team's choice for the backup catcher role.

[39] Cash initially wore uniform number 36, but switch to 30 when Paul Byrd joined the team in August.

[40] That year, Cash was one of three catchers on the Red Sox postseason roster, alongside Jason Varitek and David Ross.

[41] He was used sparingly in the playoffs, making his only start in Game Four of the Championship Series, where he hit a home run in his first postseason at-bat.

[43] On December 23, 2008, Cash signed a minor league deal with the New York Yankees with an invitation to spring training.

[50] Before the 2010 season, Cash signed a minor league deal with the Houston Astros that included an invite to spring training.

[57][58] On July 1, 2010, Cash was acquired by the Red Sox for infielder Ángel Sánchez, after Boston catcher Jason Varitek went on the disabled list.

[57] As the backup catcher for the Red Sox for part of the season, Cash appeared in 29 games, batting .133 (8-for-60) with one RBI.

[61] Shortly after the 2012 season ended, Cash joined Terry Francona's staff with the Cleveland Indians as their bullpen coach.

[65] After the 2014 season, Cash was a finalist, alongside Jeff Bannister and Tim Bogar, for the Texas Rangers manager role.

On June 26, Jose Alvarado pitched to a batter in the ninth inning, then moved to first base for an out, before returning to the mound to face the next hitter.

[92] Red Sox manager Alex Cora was so confused by the move that he went onto the field four different times to get clarification from the umpire; only one pitch was thrown over a 21-minute period.

[93] The Rays clinched the American League Wild Card on September 27[94] and finished in second place in the AL East with a 96–66 record.

[95] Tampa Bay defeated the Oakland Athletics in the Wild Card Game[96] then fell to the Astros in the Division Series.

[97] He was named American League Manager of the Year by Sporting News for leading a team with a $53 million payroll to a playoff berth.

[98] On September 1, 2020, New York Yankees pitcher Aroldis Chapman threw a pitch that narrowly missed the head of Rays batter Mike Brosseau.

[100] The 2020 Rays finished first in the AL East, and advanced to the 2020 World Series via playoff wins over the Toronto Blue Jays (2–0), Yankees (3–2), and Houston Astros (4–3).

While the move was typical of the season long strategy for the Rays, many were critical of the decision to bring in reliever Nick Anderson.

[104] Mookie Betts doubled with a runner on, setting up World Series MVP Corey Seager to drive in the go ahead runs.

[107] In the 2021 American League Division Series, they faced the Boston Red Sox, who they had beaten eleven out of nineteen times that year.

[113] The Rays courted controversy during the team's annual LGBTQ+ Pride Night in 2022, when at least five players opted out of wearing a Pride-themed logo and cap.

[114][115] A year later, after an MLB directive banned teams from having players wearing Pride-themed patches and logos, Cash spoke in support of Pride Night: "We welcome our LGBTQ+ community — not just today.

[118] They were again swept in the playoffs, losing two in a row to the Texas Rangers in the 2023 American League Wild Card Series.

[121] On February 8, 2024, the Rays announced that Cash and baseball operations Erik Neander were both signed to multi-year extensions.