From Jim Baumbach and Robert E. Kessler:

The affidavit of Yankees pitcher Andy Pettitte helps to support the account of Brian McNamee, Roger Clemens' former trainer, that he gave Clemens injections of banned drugs, according to a ranking member of the congressional committee investigating the use of illegal drugs in baseball.

Newsday.com first reported the story last night after interviewing Rep. Tom Davis (R-Va.) yesterday. Davis said that in an affidavit given to the House Oversight Committee, Pettitte's account matches McNamee's in most details, but that in a separate affidavit to the committee, Clemens said both are mistaken.

In related news, Pettitte will not testify publicly on Wednesday. Neither will Chuck Knoblauch or Kirk Radomski. All have been excused.