竞争激烈的专科，没有被match 上（落单）的机率还是蛮高的。

总体来看：US senior (MD)的 match rate 非常高。大约95%。 但有几个科的match 率比较低。

1)Neurosurgery Match Rate for MD SeniorsThe average match rate for neurosurgery residency is 77.8% for MD seniors in the US.

2)Dermatology residencies continue to be among the most competitive, with only 66% of seniors in US medical schools (MD programs) successfully matching to a dermatology residency in 2023, according to the National Resident Matching Program.

3)所以，在选择专科之前，一定要全面衡量自己的实力。一定要量力而行。

皮肤科，骨科，神经外科等科落单的机率相当高。