Bradley provided Wahl with an opportunity to study abroad in Argentina, spending time with Boca Juniors, before returning to the United States for the 1994 FIFA World Cup.

[27][28] Wahl joined FOX Sports in October 2012 after having participated in the network's coverage of the UEFA Euro 2012 tournament earlier that year.

[5][31] On April 10, 2020, he was fired from Sports Illustrated after criticizing James Heckman, CEO of the magazine's publisher Maven, for his handling of pay cuts during the coronavirus pandemic.

[37] While following the United States to the 2022 FIFA World Cup, Wahl became caught up in a crackdown in Qatar on items that featured a rainbow in support of the LGBT community.

[5][40] In 2001, Wahl married his Princeton schoolmate Céline Gounder,[41] a journalist and New York University medical doctor who specializes in infectious diseases and global health.

[9] Wahl collapsed suddenly in his press box seat at the Lusail Iconic Stadium in Qatar while covering the quarterfinal match between Argentina and the Netherlands.

[3] Local paramedics responded quickly and treated him for 30 minutes, including providing CPR,[42] before Wahl was transported to Hamad General Hospital, according to a statement by his wife.

[47] Wahl's body was repatriated to the United States on December 12 to undergo an autopsy with the New York City Medical Examiner,[48] which determined that the death was caused by an aortic aneurysm.

[49][50] Wahl had complained of chest discomfort and sought help at the medical clinic at the World Cup media center, where he was told that he probably had bronchitis.

[61] Also on January 25, the United States Soccer Federation announced that for that evening's friendly match between the U.S. Men's National Team and Serbia at Los Angeles' BMO Stadium, a press box seat would be left open in Wahl's memory, decorated with his framed photo, flowers, and a USMNT jersey bearing his last name.

The federation will honor Wahl in this manner at every home match involving the U.S. men's or women's teams through the 2026 FIFA World Cup, an event the U.S. will co-host with Canada and Mexico.

[63] The press box at CPKC Stadium, the soccer-specific home for National Women's Soccer League team Kansas City Current, was dedicated to Wahl in November 2023.

[64] The fourth episode of Season 3 of the Apple TV+ series Ted Lasso was dedicated to the memory of Wahl, who was a fan of the show and fielded questions from its writers concerning a storyline in which journalist Trent Crimm (James Lance) writes a book about Zava's (Maximilian Osinski) arrival at AFC Richmond, the team depicted in the series.