Allen scored 27 of his 32 points in the first half with a record-setting 3-point shooting display, Rondo completed a triple-double down the stretch and the Celtics handed the Los Angeles Lakers their first home loss of the postseason, 103-94 Sunday night in Game 2.
Allen hit a finals-record eight 3-pointers in a dazzling effort for the Celtics, including seven before halftime. Rondo then took charge after Allen cooled down, racking up 19 points, 12 rebounds and 10 assists in his fifth playoff triple-double.
"An entire team effort," Rondo said. "Ray carried us through the first half. Second half, we got in a little slump but we stuck with it, stayed together and got a victory."
Game 3 is Tuesday night in Boston.
Kobe Bryant scored 21 points while battling more foul trouble for the Lakers, who couldn't catch up to Boston's dynamic guards. Pau Gasol had 25 points and eight rebounds for the Lakers, and Andrew Bynum added 21 points and six rebounds.
The teams traded the lead throughout the final period, but Rondo's heady layup put the Celtics ahead for good with 3:21 to play. The play was vintage Rondo, scooting in to collect a shot blocked by Gasol and scoring before Gasol could react.
Kevin Garnett then hit a jumper, and after another possession of stifling defense, Rondo hit another jumper, celebrating with a swing of his arm in the mostly silent Staples Center.
Rondo has grown into possibly the Celtics' biggest offensive threat in these playoffs, but his 10-point fourth quarter looms among his largest achievements.
The Celtics essentially were a two-man show all night. Rondo sliced up the Los Angeles defense with slick drives, while Allen was relentless from the perimeter, hitting his fourth, fifth and sixth 3-pointers in a two-minute span midway through the second quarter.