On 24 August 2017, Ginóbili re-signed with the Spurs. In January 2018, he became the only player in NBA history to have multiple 20-point games off the bench at age 40 or older. He also became the first player in his 40s to score 15-plus points in back-to-back games since Michael Jordan in 2002–03. On 28 January against the Sacramento Kings, Ginóbili and Vince Carter scored 21 and 15 points respectively; it was the first game in NBA history where two players over the age of 40 scored more than 15 points. On 29 March 2018, in a 103–99 win over the Thunder, Ginobili became the Spurs' career leader in steals, passing David Robinson (1,388) for the franchise record. In game 4 of the Spurs' first round playoff series against the Warriors, Ginóbili played in his 217th playoff game, breaking a tie with Shaquille O'Neal for sixth in league history. Ginóbili also passed Reggie Miller for third in career 3-pointers in playoff history. The Spurs lost to the Warriors in five games.