CLEVELAND, Ohio — I can’t wait.That’s what I kept thinking while watching the Cleveland Cavaliers defeat the Boston Celtics, 109-99, in Game 6 of the Eastern Conference Finals on Friday at Quicken Loans Arena.I can’t wait for Game 7 in Boston on Sunday.I can’t wait to see LeBron James in another Game 7 … with a chance to return to the NBA Finals for the eighth consecutive time in his career.I can’t wait to see if James can beat Boston at home, where the Celtics are 10-0 in the postseason.I can’t wait to see if James can turn in another epic performance, much he like did when scoring 46 points with 11 rebounds and 9 assists in Friday’s victory.I can’t wait to see what comes next because we are watching the greatest run of basketball in Cavaliers history.”We’re trying to knock off a group with a number of champions and a generational player,” Boston coach Brad Stevens said before the game. “It’s a heck of a challenge.”James now has a 13-9 record in “elimination games,” meaning games where his team’s season ends if they lose. He’s averaging 34 points in those pressure-packed games — more than anyone else in NBA history.That’s just one of many reasons I can’t wait for Sunday’s game.WHAT IT TAKES”You’ve got to be mentally tough,” coach Tyronn Lue said before the game. “If you want to win, that’s what it takes. Nothing is easy, and we understand that.”This has been the most grueling playoff run in the four years since James returned to the Cavs.James has played more minutes and scored more points and had to do more than any other player on any team in these playoffs.Sunday’s game will be No. 100 for James this season — all 82 in the regular season, 18 in the playoffs.”It becomes ever more obvious as you go round to round,” said Stevens. “The stamina that’s required to get through the playoffs becomes more obvious as you go round to round. You’re not going to get anywhere by looking ahead or behind … you have to stay in the moment.”James often says the same thing, “staying in the moment.”That moment happened for James and the Cavs in Friday’s victory.