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Donaldson walks it off in the 11th inning in his Yankees debut (0:38)

Josh Donaldson hit a walk-off single in the bottom of the ninth to give the Yankees a 6-5 win over the Red Sox. (0:38)

Josh Donaldson felt the pressure to make a good first impression when he joined the Yankees.

Donaldson said that everybody feels that.

The moment for Donaldson to really trust his process came in the bottom of the 11th when Isiah Kiner-Falefa was on second base. Donaldson needed to trust the process that carried him to 251 career homers and an award before he arrived in New York.

On a 90.1 mph cutter from Kutter Crawford, Donaldson hit a single up the middle, which came through on Friday.

In the process, Donaldson became the third Yankees player since 1920 to record a walk-off RBI in his Yankees debut, joining Roy Weatherly in 1943 and Chase Headley in 2014).

The walk-off is probably going to stick out, but I think the team win will lead to good things in the future.

Donaldson entered the Red Sox-Yankees rivalry on Friday.

Donaldson said it was a good feeling to be in an environment where both sides were expected to win.

Even if Donaldson's at-bat in the 11th ended up going in a different direction, he would not have been concerned about his ability to adjust to playing under the bright lights of New York.

There is a level of wanting to ingratiate yourself to the new town.