Sports briefly: Patrick Mahomes gets $477 million contract extension

The Kansas City Chiefs made sure they will have quarterback Patrick Mahomes around as long as possible.

The Super Bowl MVP agreed to a 10-year extension worth up to $503 million, according to his agency, Steinberg Sports. The deal is worth $477 million in guarantee mechanisms and includes a no-trade clause and opt-out clauses if guarantee mechanisms aren't met.

It's the richest contract in professional sports history, surpassing outfielder Mike Trout's $426.5 million deal with the Los Angeles Angels.

The extension for the 2018 NFL MVP starts in 2022 when the salary cap is projected to be $227.5 million. However, that number could be lower depending on revenue losses from the cornonavirus pandemic.

• Colin Kaepernick will be featured in a documentary series produced by ESPN Films.

The WNBA revealed the results of its first round of coronavirus testing.

The league announced seven of the 137 players — about 5% — tested had COVID-19 positive results. The tests were administered from June 28 to July 5.

The most recent WNBA star to withdraw from the season was Las Vegas' Liz Cambage. The team announced Cambage's decision not to participate over the weekend.

• WNBA players will wear uniforms for the opening weekend of the season featuring the names of women who have died because of alleged police brutality or racial violence — including Breonna Taylor, Vanessa Guillen and Sandra Bland — when the league begins play later this month.

The ATP Tour temporarily changed its rankings system because of the pandemic, hoping to reward players who perform well when the 2020 season resumes without punishing those who can't or choose not to play. A player will be able to count his best 18 results over the 22-month period that covers March 2019 to December 2020. The traditional window covers only 52 weeks.

• Frances Tiafoe will not play in the World TeamTennis season after testing positive for the coronavirus.

The PGA Tour announced the Memorial tournament, which begins July 16, won't have fans in attendance and will not have an attached pro-am event, as originally planned.

Attendance was going to be capped at 20% of the course's capacity.

But tournament officials cited the rising number of COVID-19 cases around the country as the reason for the change in plans.

Paralympics: Italian auto racing champion-turned-Paralympic gold medalist Alex Zanardi underwent a five-hour surgery to reconstruct his face following a crash on his handbike last month.

Olympics: Willi Holdorf, the 1964 Olympic decathlon champion, died following a severe illness. He was 80.

College football: Fordham's game at Hawaii on Sept. 12 was canceled because of the pandemic.