Domingo German Receives Hero's Welcome At Yankees Team Hotel After Perfect Game

Domingo German received ALL of the love after throwing a perfect game Wednesday night ... getting a hero's welcome at the Yankees' team hotel -- and TMZ Sports has video of it!!

The star pitcher showed up to the swanky San Francisco spot just minutes after making history in an 11-0 win over the A's at the Oakland Coliseum -- and you can see in the footage, a TON of fans showed up to celebrate his moment with him.

As soon as he stepped off the bus, Pinstripes supporters cheered loudly ... and showered him with "Perfect game!" chants.

German was so grateful for the warm responses -- he spent a few moments signing autographs for those who lined up.

One of the fans who was there tells us ... German appeared super happy the entire time, thanking everyone there for their support.

Of course, the 30-year-old deserved all of the praise after his performance on the mound ... his nine flawless innings marked just the 24th time in MLB history that a pitcher has been perfect throughout a night at the ballpark.

No word yet on how the party was when Domingo got inside the hotel ... but the Yanks had a day game Thursday afternoon -- so it probably wasn't too rowdy.