SAN FRANCISCO (Standard&Poor's) Oct. 28, 2010--Standard&Poor's Ratings Services said today that it assigned its 'A-' rating to Travelers Cos. Inc.'s $1.25 billion senior unsecured debt issue. Travelers drew this debt--$500 million of which has a 10-year maturity and $750 million of which has a 30-year maturity--from its universal shelf. It will use the proceeds for general corporate purposes, including to fund the consummation of its tender offer for any or all of its outstanding $1 billion subordinated debentures due in 2067. The company might also use the proceeds to pay a portion of the outstanding debt that matures over the next few years. The rating reflects Travelers' very strong market position, disciplined underwriting, and very strong