Example 2.4. Sequence of Mappings in the YAML spec fails when it is at the root level:
@startyaml
-
name: Mark McGwire
hr: 65
avg: 0.278
-
name: Sammy Sosa
hr: 63
avg: 0.288
@endyaml

Nor the compacted form:

Although it works fine as a nested item:


PS I will assume there's no intention to support flow-style, so I won't raise cases for spec examples 2.5 or 2.6.