The Thunder are looking for another effective performance from their big man.  The Oklahoma City Thunder are on the verge of completing their second sweep of the postseason, as they currently lead the Los Angeles Lakers 3-0 in the second round of the playoffs. OKC has had dominant performances across the board, as they have yet to win a game by less than 18 points against the Lakers.  Now with Game 4 approaching Monday night, the Thunder are looking to put all the pieces back into place one final time to close out the series. OKC will need its players to step up once again, including its big man, who has been one of the most efficient players in the series.  Isaiah Hartenstein has been a guaranteed bucket the last couple of games for the Thunder.…