Jeter captained the Yankees during much of a 20-year career that ended in 2014 and included five World Series titles and a New York-record 3,465 hits.
CeFaan Kim was live outside Yankee Stadium before the ceremony started:
He is the 22nd player to have his number retired by New York, by far the most among major league teams, and he was the last to wear a single-digit number.
Jeter picked Mother's Day for the ceremony, and his grandmother, parents, sister, nephew and pregnant wife joined him at Yankee Stadium on Sunday.
He says "there isn't a person or player I would trade places with that's playing now or ever."