On April 9, 2019, in a 120–109 season finale loss to the Dallas Mavericks, Crawford made NBA history by recording 51 points in his fourth 50-point game to date.  At 39 years old and 20 days, he thus broke two NBA records: the oldest player to tally 50+ points—held by Michael Jordan at 38 years and 315 days since December 29, 2001—as well as the most points scored by a player not in the starting lineup, held by Nick Anderson with 50 points since April 23, 1993. During the game, Crawford shot 18-of-30 (60%) from the field, 7-of-13 (53. 8%) from three-point range, and 8-of-9 (88. 9%) from the free-throw line. He also had 5 rebounds, 5 assists, 1 steal, and 1 block coming off the bench. Down by as much as 31 in the third quarter, he rallied Phoenix back into the game, scoring 12 points in succession and bringing the score to 107-103 with 3:39 minutes left in the game. By scoring 28 and 27 points in the previous two games, Crawford joined Kobe Bryant as the only players in league history to record three consecutive 25+ point games in their 19th or later season.