Kevin Durant #35 of the Golden State Warriors reacts after sustaining an injury during the second quarter against the Toronto Raptors during Game Five of the 2019 NBA Finals at Scotiabank Arena on June 10, 2019 in Toronto, Canada.

Basketball superstar Kevin Durant's injury may have reshaped the outlook of the NBA's upcoming free agency period, but it also sent ripples through Wall Street.

Shares of MSG Networks tumbled nearly 5% on Tuesday after Durant reportedly tore his Achilles tendon in Game 5 of the NBA Finals between the Golden State Warriors and the Toronto Raptors on Monday evening. Durant was expected to opt out of his current contract with Golden State at the end of the season, making the 10-time All-Star the marquee free agent of 2019.

Several teams, including the New York Knicks, were expected to vie for Durant's services in free agency. Signing Durant, a two-time NBA champion and one of the best players in the league, could have helped the Knicks become a playoff contender. The Knicks have missed the NBA playoffs for six straight years.