in.yaml

# The !!omap tag is one of the optional types
# introduced for YAML 1.1. In 1.2, it is not
# part of the standard tags and should not be
# enabled by default.
# Ordered maps are represented as
# A sequence of mappings, with
# each mapping having one key
--- !!omap
- Mark McGwire: 65
- Sammy Sosa: 63
- Ken Griffy: 58