Joe Girardi called it "neat.'' Mariano Rivera likely would agree.

The Yankees drafted the iconic closer's son, Mariano Rivera Jr., in the 29th round of the first-year player draft Saturday. "We know he comes from good bloodlines,'' Girardi said.

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This past year, in his sophomore season for Iona, Rivera -- who began his college career at Quinnipiac -- went 2-6 with a 5.40 ERA in 13 appearances (12 starts) and 70 innings. He struck out 50 and walked 26.

Scouts have said the 20-year-old's best pitch is a slider, not the cut fastball his father made famous. Rivera Jr. has only dabbled with that pitch.

Girardi said he saw the elder Rivera last week and got a brief scouting report.

"His velocity, as he's gotten bigger and stronger, it's increased,'' Girardi said. "Mo didn't have much to say. He's always been a humble guy and he wasn't going to say much about his son. But he loves what he's doing.''

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The Yankees chose Andy Pettitte's son Josh out of Deer Park (Texas) High in the 37th round in 2013. He went to Baylor and transferred to Rice.