Memphis Grizzlies guard Grayson Allen was ejected from Thursday night's NBA Las Vegas Summer League contest against the Boston Celtics after committing a pair of flagrant fouls during a seven-second span.  

Late in the second quarter, Allen was given a technical foul for setting a hard offensive screen against Boston guard Max Strus. That would not be the last of his, um, physical play on this night, though.

At the 9:19 mark in the fourth quarter, Allen got called for a flagrant foul after delivering a shove to the upper body of Celtics forward Grant Williams. And when play resumed after the free throw, Allen took a hard swipe at a driving Williams, leading to an early exit:

Of course, given Allen's controversial tenure at Duke, the second-year guard's actions created an all-too-familiar feeling:

Allen finished with three points on 1-of-8 shooting, including 1-of-6 from three-point range. He recorded a minus-28 plus-minus in 19 minutes of action.