Crawford, who also won the award in 2009-10 while with the Atlanta Hawks, joins Kevin McHale, Ricky Pierce and Detlef Schrempf as two-time winners.
Crawford, who came off the bench in 45 of the 69 games in which he appeared, led all NBA reserves in scoring, averaging 18.6 points. Additionally, Crawford accounted for 3.2 assists and 2.3 rebounds in 30.3 minutes per game for a Clippers team that went 57-25 and earned the No. 3 seed in the Western Conference playoffs.
Crawford amassed 57 first-place votes and 421 total points from a panel of 125 sportswriters and broadcasters. Forward Taj Gibson of the Chicago Bulls finished second with 395 points (49 first-place votes) and guard Manu Ginobili of the San Antonio Spurs finished third with 138 points (nine first-place votes).
In order to be eligible for this award, players had to have come off the bench in more games than they started.
Crawford tallied double-figure scoring efforts in 15 of 16 January games, as the Clippers posted a 12-4 record. On Jan. 25, Crawford poured in 37 points and handed out 11 assists in a 126-118 win over the Toronto Raptors. For the season, he posted 20-plus points 29 times and 30-plus points six times. The Clippers were 31-14 (.689) in games in which Crawford appeared off the bench.