Can I have two virtual hosts with same servername?

[Michael Ni <michaelcni@xxxxxxxxx>]

I have a java project that resides in tomcat.  Recently we needed to add
 Wordpress (php project).  

We decided to go with Apache Server 
in front with virtual hosts with mod_proxy_ajp.

So far I have 
gotten different server names to work

http://www.foobar.com
http://blog.foobar.com

<VirtualHost
 *:80>
   ServerName www.foobar.com
     
   <Proxy *>
     AddDefaultCharset Off
     Order 
deny,allow
     Allow from all
   </Proxy>
 
   
ProxyPass / ajp://localhost:8009/
   ProxyPassReverse / 
ajp://localhost:8009/
</VirtualHost>

<VirtualHost *:80>
    ServerName blog.foobar.com

  
 ErrorLog "C:/Program Files/Apache Software Foundation/Apache2.2/logs/

error.log"
   DocumentRoot "C:/Program Files/Apache Software Foundation/Apache2.2/htdocs"
</VirtualHost>



HOWEVER,
we want to do the following instead
http://www.foobar.com
http://www.foobar.com/blog

why does the following NOT work?

<VirtualHost *:80>
   ServerName www.foobar.com
     
   <Proxy *>
     AddDefaultCharset Off
     Order deny,allow
     Allow from all
   </Proxy>
 
   ProxyPass / ajp://localhost:8009/
   ProxyPassReverse / ajp://localhost:8009/
</VirtualHost>

<VirtualHost *:80>
    ServerName www.foobar.com
    ServerPath /blog

   ErrorLog "C:/Program Files/Apache Software Foundation/Apache2.2/logs/error.log"
   DocumentRoot "C:/Program Files/Apache Software Foundation/Apache2.2/htdocs"
</VirtualHost>