Clarification of RFC2246 with regards to Finished Message
This is an error in RFC 2246 corrected at https://www.rfc-editor.org/errata_search.php?rfc=2246 and in the subsequent version TLS RFCs 4346 and 5246. 
It derives from SSLv3 on which TLSv1.0 was mostly based, now available as RFC 6101 if you want to compare them. You'll see SSLv3 had 

enum { client(0x434C4E54), server(0x53525652) } Sender;


(which are the ASCII strings "CLNT" and "SRVR" respectively) and specified that Sender is included in the hash calculation which in SSLv3 was a concatenation of doubled MD5 and SHA1 keyed hashes. TLSv1.0 changed this to finished_label with the values "client finished" and "server finished", included in the PRF defined elsewhere in the document as the XOR of doubled MD5 and SHA1 HMACs, where each HMAC is itself a doubled keyed hash.