BOSTON —Now that Celtics point guard Rajon Rondo has emerged as the team's leading postseason scorer, 33-year-old forward Kevin Garnett has taken to emitting his signature primal scream each time Rondo makes a basket. "I'm no longer able to contain myself when I pass it back out to him because I can't get through a double-team, or when he hits a three while I'm stumbling in the paint," Garnett told reporters after Rondo's 22-point performance Thursday, during which Garnett punctuated the point guard's behind-the-back fast-break assist by pounding Rondo's chest with his fist. "I think I feel it the most when I'm grinding under the basket and I flip up an off-balance shot that clangs off the front of the rim, and Rajon's there to rebound and lay it back all in one motion and I'm like, 'GRAAAAAAAAAAAAAAGHHHHHHH!!!!!!!!!!!'" Garnett also announced plans to engage in histrionics whenever Glen Davis does something in the interior that Garnett is no longer capable of doing.