Luka Doncic fans thought they were witnessing their worst nightmare on Saturday when they saw the Slovenian collide with a teammate and leave the court walking gingerly. The incident happened in the third quarter of Slovenia's 100-88 loss against Latvia in an international friendly.The Latvians were on a fast break when one of Doncic's teammates crashed into the LA Lakers star. Both players fell to the floor upon impact, and Doncic's teammate landed on his knee.The five-time All-Star was writhing in pain before medical officials entered the court and escorted him to the bench. After talking with his team's medical staff, Doncic headed to the locker room on his own.On Sunday, the Slovenia Basketball X account reported that Doncic will return to practice with the team on Monday after avoiding an injury.Luka Doncic signed a $165 million contract extension with the Lakers earlier this month. The new deal is scheduled to keep the Slovenian star in Los Angeles for the next three years.Luka Doncic's defensive improvement was on displayThe Lakers allowing Luka Doncic to compete for Slovenia might just be the push their star guard needed to upgrade his game. Earlier this month, Doncic surprised fans with his transformed physique at his contract extension press conference.Doncic looked slim and lean compared to his physique at the end of the Lakers' journey last season. By allowing their star guard to compete in the EuroBasket tournament, the Lakers have given him a head start on getting used to his transformed form.Fans got a glimpse of Doncic's new capabilities in Saturday's friendly against Latvia. The Lakers star put in extra effort on defense, a department of his game that is often criticized.Doncic put great pressure on the ball and forced his man to pass the ball. He had a good defensive posture and moved his feet swiftly with his man's every action. In a clip going viral on X, the Laker star forced a turnover after using his size.Luka Doncic's defense has always been a big question mark when it comes to his potential. If he improves that part of his game, it is a positive sign for both his team and his career.