The MRI results on Los Angeles Lakers rookie Lonzo Ball's calf injury reportedly revealed a low-grade strain. Mike Trudell of Spectrum SportsNet reported the news Tuesday, noting the low-grade strain is mild. Ball underwent an MRI Tuesday after suffering the calf strain Sunday against the Dallas Mavericks in Los Angeles' NBA Summer League semifinals. Ball's injury kept him out of Monday's Las Vegas Summer League title game, which the Lakers won 110-98 against the Portland Trail Blazers thanks to an impressive performance from Kyle Kuzma. Kuzma poured in 30 points on 11-of-16 shooting from the field and 10 rebounds, carrying the load with the UCLA product sidelined.