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Miami Heat's LeBron James sits on the bench after hurting his leg as coach Erik Spoelstra watches the game during the fourth quarter against the San Antonio Spurs in Game 1 of their NBA Finals basketball series in San Antonio

Miami Heat's LeBron James (R) sits on the bench after hurting his leg as coach Erik Spoelstra watches the game during the fourth quarter against the San Antonio Spurs in Game 1 of their NBA Finals basketball series in San Antonio, Texas June 5, 2014. REUTERS/Mike Stone (UNITED STATES - Tags: SPORT BASKETBALL TPX IMAGES OF THE DAY)

Air conditioning malfunctions, LeBron James leaves Game 1 of NBA Finals with leg cramps

Conditions were quite warm at the AT&T Center for Game 1 of the NBA Finals between the Miami Heat and San Antonio Spurs. Two-time reigning Finals MVP LeBron James left with leg cramps with 3:59 remaining and did not return.