Kansas City’s T-Mobile Center has announced that senior vice-president and general manager Brenda Tinnen will step down from her role on May 31.

Tinnen (pictured left) has led the arena, which was formerly known as Sprint Center, since 2006 and is credited with turning the 19,000-capacity facility into one of the world’s leading live entertainment venues.

Prior to joining the arena, Tinnen served in a variety of leadership and operations roles at other venues around the country, including the Colosseum at Caesar’s Palace in Las Vegas, Target Center in Minneapolis, and Staples Center and Kodak Theatre in Los Angeles.

T-Mobile Center has welcomed more than 12 million guests since it opened and currently operates as a public-private partnership between ASM Global and the City of Kansas City.

Houston Rockets’ Gretchen Sheirr has been promoted from chief operating officer of the NBA basketball team to president of business operations.

Sheirr (pictured right) recently finished her 20th season with the Rockets, having begun as an account executive before becoming senior director of ticket sales, vice-president of sales and service, chief revenue officer and eventually chief operating officer.

As chief revenue officer, Sheirr oversaw all ticketing and suite sales, services and operations for the Rockets and Toyota Center, as well as corporate development and business strategy. In her role as chief operating officer, all business departments reported directly to Sheirr.

Greg Warden has taken up a new role as vice-president of engineering at mobile ticketing company SeatGeek.

Warden joins SeatGeek from cryptocurrency and blockchain technology analysis company Chainalysis, where he also worked as vice-president of engineering. He will lead SeatGeek’s enterprise engineering teams as they develop new ticketing technology.

Southend United has appointed Tom Lawrence as its new chief executive.

Lawrence joins Southend, which was recently relegated to the National League, having served as chief executive of League One club Gillingham between February 2019 and May 2021. He will officially start his new role on June 1.

In other news, Tottenham Hotspur has announced the sudden passing of Simon Bamber, who has spent the last seven years overseeing the club’s commercial operations.

Bamber played a key role in the delivery of Tottenham’s new stadium, which opened in 2019. Bamber was involved with Tottenham for nearly 20 years, having originally been part of the Kappa team during the club’s partnership with the sportswear brand at the start of the century.

In a statement paying tribute to Bamber, Tottenham said: “He was not only an immensely valued part of our team, he was also a gentle, kind, knowledgeable and humorous man who will be missed by so very many friends and associates around the world.

“Our thoughts are with his wife Elizabeth, his daughter Ginny, family and friends at this impossibly sad time. RIP our dear friend, Simon.”

Images: BusinessWire/Houston Rockets