[Plugin: Google XML Sitemaps] /BLOG Sitemaps for Blogs Hosted in a Subfolder

I have a blog located in a subfolder of my domain at http://themarkpike.com/blog

Google reveals two different results at the top of a search for my name– “Mark Pike“.

One is for http://themarkpike.com and the other is for http://themarkpike.com/blog .

I would love to combine these results so that Google just revealed http://themarkpike.com.

Any advice on how to do this with the sitemap plugin?