Cristiano Ronaldo asked Referee for autograph on match ball after scoring 4 goals for Al Nassr (Photos)

Cristiano Ronaldo, the captain of Al Nassr, scored four goals to help his team win.

Al Nassr defeated Al Wehda 4-0 on Thursday night in the Saudi Pro League, marking the 38-year-old's 500th league goal in his career.

Including a 51st-minute penalty at the King Abdulaziz Sport City Stadium, the captain of Portugal's national team scored all four goals within 30 minutes either side of halftime.

Cristiano Ronaldo paid respect to the center referee after scoring four goals and his 500th career league goal on Thursday night before claiming the game ball.

Following the final whistle, Cristiano Ronaldo was heard respectfully asking Sultan Al-Harbi, the center referee, to sign the ball before handing it to him after scoring four goals.

After thanking each other and posing for a photo, the referee signed and gave the ball to the Portugal International.