Why Digvijay wants to face Modi?

Digvijay Singh said that he is ready to contest from Banaras, if party orders him so. He made this announcement only after confirming BJP Prime Ministerial Candidate Narendra Modi is contesting from there. Though, Digvijay is very much aware that he can’t defeat Narendra Modi at any cost, he prefers to take upon him only to impress Sonia and Rahul Gandhi. Moreover, he might be foreseeing a clear defeat of his Congress party in the hands of Narendra Modi. So, Digvijay may be thinking that when his party is going to sit in the opposition benches for the next five years, it is better to preserve his position in the party. The only way to impress his high command is boldly facing Modi in the elections and getting defeated by him, otherwise no politician of his caliber will ever think or afford to take such risk.