Serena Williams Injured in Wimbledon Return

Serena Williams tweaked her right knee during her first singles match in nearly four years, losing to Australian Maya Joint in three sets at Wimbledon.

The injury puts her planned doubles appearance with sister Venus in doubt, though Williams says she hopes to still compete.

Fellow pros praised Williams' performance despite the loss, noting her serves still exceeded 120 mph.

The 23-time Grand Slam champion's return had been one of the most anticipated storylines of the tournament.